correlation, linear regression 1. scatterplot relationship between two continouous variables 2

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Correlation, linear regression 1

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  • Correlation, linear regression*

    Biostat 3.

  • ScatterplotRelationship between two continouous variables*

    Biostat 3.

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  • ScatterplotRelationship between two continouous variables*

    Biostat 3.

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  • ScatterplotOther examples*

    Biostat 3.

  • Example II.Imagine that 6 students are given a battery of tests by a vocational guidance counsellor with the results shown in the following table:

    Variables measured on the same individuals are often related to each other.

    *

    Biostat 3.

  • Let us draw a graph called scattergram to investigate relationships.Scatterplots show the relationship between two quantitative variables measured on the same cases.In a scatterplot, we look for the direction, form, and strength of the relationship between the variables. The simplest relationship is linear in form and reasonably strong.Scatterplots also reveal deviations from the overall pattern.

    *

    Biostat 3.

  • Creating a scatterplotWhen one variable in a scatterplot explains or predicts the other, place it on the x-axis.Place the variable that responds to the predictor on the y-axis.If neither variable explains or responds to the other, it does not matter which axes you assign them to.*

    Biostat 3.

  • *Possible relationshipspositive correlationnegative correlationno correlation

    Biostat 3.

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  • Describing linear relationship with number: the coefficient of correlation (r).Also called Pearson coefficient of correlation*Correlation is a numerical measure of the strength of a linear association. The formula for coefficient of correlation treats x and y identically. There is no distinction between explanatory and response variable. Let us denote the two samples by x1,x2,xn and y1,y2,yn , the coefficient of correlation can be computed according to the following formula

    Biostat 3.

  • Karl PearsonKarl Pearson (27 March 1857 27 April 1936) established the discipline of mathematical statistics. http://en.wikipedia.org/wiki/Karl_Pearson*

    Biostat 3.

  • Properties of rCorrelations are between -1 and +1; the value of r is always between -1 and 1, either extreme indicates a perfect linear association. -1r 1.a) If r is near +1 or -1 we say that we have high correlation.

    b) If r=1, we say that there is perfect positive correlation. If r= -1, then we say that there is a perfect negative correlation.

    c) A correlation of zero indicates the absence of linear association. When there is no tendency for the points to lie in a straight line, we say that there is no correlation (r=0) or we have low correlation (r is near 0 ).

    *

    Biostat 3.

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  • *Calculated values of rpositive correlation, r=0.9989negative correlation, r=-0.9993no correlation, r=-0.2157

    Biostat 3.

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  • ScatterplotOther examples*r=0.873r=0.018

    Biostat 3.

  • Correlation and causationa correlation between two variables does not show that one causes the other. *

    Biostat 3.

  • Correlation by eyehttp://onlinestatbook.com/stat_sim/reg_by_eye/index.html This applet lets you estimate the regression line and to guess the value of Pearson's correlation. Five possible values of Pearson's correlation are listed. One of them is the correlation for the data displayed in the scatterplot. Guess which one it is. To see the correct value, click on the "Show r" button.*

    Biostat 3.

  • Effect of outliersEven a single outlier can change the correlation substantially. Outliers can create an apparently strong correlation where none would be found otherwise, or hide a strong correlation by making it appear to be weak.

    *r=-0.21r=0.74r=0.998r=-0.26

    Biostat 3.

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  • Correlation and linearity Two variables may be closely related and still have a small correlation if the form of the relationship is not linear.*r=2.8 E-15 (=0.0000000000000028)r=0.157

    Biostat 3.

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    30

    90

    math

    math score

    theater

    Munka3

    550

    535

    535

    520

    455

    420

    410

    math

    math score

    language

    550

    535

    535

    520

    455

    420

    410

    math

    math score

    language

    xy

    -39

    -2.87.84

    -2.66.76

    -2.45.76

    -2.24.84

    -24

    -1.83.24

    -1.62.56

    -1.41.96

    -1.21.44

    -11

    -0.80.64

    -0.60.36

    -0.40.16

    -0.20.04

    00

    0.20.04

    0.40.16

    0.60.36

    0.80.64

    11

    1.21.44

    1.41.96

    1.62.56

    1.83.240

    24

    2.24.84

    2.45.76

    2.66.76

    2.87.84

    39

    y

    Diagram9

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    30

    60

    90

    50

    30

    90

    160

    math

    math score

    theater

    Munka2

    30

    60

    90

    50

    30

    90

    math

    math score

    theater

    Munka3

    550

    535

    535

    520

    455

    420

    410

    math

    math score

    language

    550

    535

    535

    520

    455

    420

    410

    math

    math score

    language

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

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    -1.4-0.98544973

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    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    y

  • Correlation and linearity Four sets of data with the same correlation of 0.816http://en.wikipedia.org/wiki/Correlation_and_dependence*

    Biostat 3.

  • Coefficient of determination The square of the correlation coefficient multiplied by 100 is called the coefficient of determination. It shows the percentages of the total variation explained by the linear regression. Example.The correlation between math aptitude and language aptitude was found r =0,9989. The coefficient of determination, r2 = 0.917 . So 91.7% of the total variation of Y is caused by its linear relationship with X .*

    Biostat 3.

  • When is a correlation high?What is considered to be high correlation varies with the field of application. The statistician must decide when a sample value of r is far enough from zero, that is, when it is sufficiently far from zero to reflect the correlation in the population.*

    Biostat 3.

  • Testing the significance of the coefficient of correlationThe statistician must decide when a sample value of r is far enough from zero to be significant, that is, when it is sufficiently far from zero to reflect the correlation in the population.(details: lecture 8.)

    *

    Biostat 3.

  • Prediction based on linear correlation: the linear regressionWhen the form of the relationship in a scatterplot is linear, we usually want to describe that linear form more precisely with numbers. We can rarely hope to find data values lined up perfectly, so we fit lines to scatterplots with a method that compromises among the data values. This method is called the method of least squares. The key to finding, understanding, and using least squares lines is an understanding of their failures to fit the data; the residuals.*

    Biostat 3.

  • Residuals, example 1.*

    Biostat 3.

  • Residuals, example 2.*

    Biostat 3.

  • Residuals, example 3.*

    Biostat 3.

  • Prediction based on linear correlation: the linear regressionA straight line that best fits the data: y=bx + a or y= a + bx is called regression lineGeometrical meaning of a and b.b: is called regression coefficient, slope of the best-fitting line or regression line;a: y-intercept of the regression line.

    The principle of finding the values a and b, given x1,x2,xn and y1,y2,yn .Minimising the sum of squared residuals, i.e.( yi-(a+bxi) )2 min

    *

    Biostat 3.

  • Residuals, example 3.*(x1,y1)b*x1+ay1-(b*x1+a)y2-(b*x2+a)y6-(b*x6+a)

    Biostat 3.

  • *

    Biostat 3.

    The general equation of a line is y = a + b x. We would like to find the values of a and b in such a way that the resulting line be the best fitting line. Let's suppose we have n pairs of (xi, yi) measurements. We would like to approximate yi by values of a line . If xi is the independent variable, the value of the line is a + b xi.

    We will approximate yi by the value of the line at xi, that is, by a + b xi. The approximation is good if the differences

    are small. These differences can be positive or negative, so let's take its square and summarize:

    This is a function of the unknown parameters a and b, called also the sum of squared residuals. To determine a and b: we have to find the minimum of S(a,b). In order to find the minimum, we have to find the derivatives of S, and solve the equations

    The solution of the equation-system gives the formulas for b and a:

    and

    It can be shown, using the 2nd derivatives, that these are really minimum places.

  • Equation of regression line for the data of Example 1.y=1.016x+15.5 the slope of the line is 1.016 Prediction based on the equation: what is the predicted score for language for a student having 400 points in math?ypredicted=1.016 400+15.5=421.9*

    Biostat 3.

  • Computation of the correlation coefficient from the regression coefficient.There is a relationship between the correlation and the regression coefficient:

    where sx, sy are the standard deviations of the samples .From this relationship it can be seen that the sign of r and b is the same: if there exist a negative correlation between variables, the slope of the regression line is also negative . *

    Biostat 3.

  • SPSS output for the relationship between age and body mass*Coefficient of correlation, r=0.018Equation of the regression line:y=0.078x+66.040

    Biostat 3.

  • SPSS output for the relationship between body mass at present and 3 years ago*Coefficient of correlation, r=0.873Equation of the regression line:y=0.795x+10.054

    Biostat 3.

  • Regression using transformationsSometimes, useful models are not linear in parameters. Examining the scatterplot of the data shows a functional, but not linear relationship between data. *

    Biostat 3.

  • ExampleA fast food chain opened in 1974. Each year from 1974 to 1988 the number of steakhouses in operation is recorded. The scatterplot of the original data suggests an exponential relationship between x (year) and y (number of Steakhouses) (first plot)Taking the logarithm of y, we get linear relationship (plot at the bottom) *

    Biostat 3.

  • Performing the linear regression procedure to x and log (y) we get the equationlog y = 2.327 + 0.2569 xthat isy = e2.327 + 0.2569 x=e2.327e0.2569x= 1.293e0.2569x is the equation of the best fitting curve to the original data. *

    Biostat 3.

  • *log y = 2.327 + 0.2569 xy = 1.293e0.2569x

    Biostat 3.

  • Types of transformationsSome non-linear models can be transformed into a linear model by taking the logarithms on either or both sides. Either 10 base logarithm (denoted log) or natural (base e) logarithm (denoted ln) can be used. If a>0 and b>0, applying a logarithmic transformation to the model *

    Biostat 3.

    Krisztina Boda Krisztina Boda

    Exponential relationship ->take log yModel: y=a*10bxTake the logarithm of both sides:lg y =lga+bxso lg y is linear in x*

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

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    math

    math score

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    0

    0

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    0

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    math

    math score

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    0

    0

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    0

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    math

    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

    -2-0.9092974268

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    -0.8-0.7173560909

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    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

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    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    0

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    0

    y

    x

    log y

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    y

    log10 x

    y

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    log y

    log x

    log y

    0

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    0

    y

    1/x

    y

    Diagram7

    1.1

    1.9

    4

    8.1

    16

    y

    x

    y

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    math

    math score

    theater

    nemlineris

    math

    math score

    theater

    transzformcik

    math

    math score

    language

    math

    math score

    language

    math

    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

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    -1.8-0.9738476309

    -1.6-0.999573603

    -1.4-0.98544973

    -1.2-0.932039086

    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    y

    x

    y

    y

    x

    log y

    y

    x

    y

    y

    log10 x

    y

    y

    x

    y

    log y

    log x

    log y

    y

    x

    y

    y

    1/x

    y

    Diagram8

    0.0413926852

    0.278753601

    0.6020599913

    0.9084850189

    1.2041199827

    y

    x

    log y

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    math

    math score

    theater

    nemlineris

    math

    math score

    theater

    transzformcik

    math

    math score

    language

    math

    math score

    language

    math

    math score

    retailing

    xy

    -3-0.1411200081

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    -2.6-0.5155013718

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    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

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    0.98544973

    0.999573603

    0.9738476309

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    0.8084964038

    0.6754631806

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    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    y

    x

    y

    y

    x

    log y

    y

    x

    y

    y

    log10 x

    y

    y

    x

    y

    log y

    log x

    log y

    y

    x

    y

    y

    1/x

    y

    Krisztina Boda Krisztina Boda

    Logarithm relationship ->take log xModel: y=a+lgx

    so y is linear in lg x*

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    0

    0

    0

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    0

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    math

    math score

    theater

    nemlineris

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    transzformcik

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    0

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    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

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    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    0

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    0

    y

    x

    log y

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    y

    log10 x

    y

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    log y

    log x

    log y

    0

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    0

    y

    1/x

    y

    Diagram9

    0.1

    2

    3.01

    3.9

    y

    x

    y

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    math

    math score

    theater

    nemlineris

    math

    math score

    theater

    transzformcik

    math

    math score

    language

    math

    math score

    language

    math

    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

    -2-0.9092974268

    -1.8-0.9738476309

    -1.6-0.999573603

    -1.4-0.98544973

    -1.2-0.932039086

    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    y

    x

    y

    y

    x

    log y

    y

    x

    y

    y

    log10 x

    y

    y

    x

    y

    log y

    log x

    log y

    y

    x

    y

    y

    1/x

    y

    Diagram10

    0.1

    2

    3.01

    3.9

    y

    log10 x

    y

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    math

    math score

    theater

    nemlineris

    math

    math score

    theater

    transzformcik

    math

    math score

    language

    math

    math score

    language

    math

    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

    -2-0.9092974268

    -1.8-0.9738476309

    -1.6-0.999573603

    -1.4-0.98544973

    -1.2-0.932039086

    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    y

    x

    y

    y

    x

    log y

    y

    x

    y

    y

    log10 x

    y

    y

    x

    y

    log y

    log x

    log y

    y

    x

    y

    y

    1/x

    y

    Krisztina Boda Krisztina Boda

    Power relationship ->take log x and log yModel: y=axbTake the logarithm of both sides:lg y =lga+b lgxso lgy is linear in lg x*

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    0

    0

    0

    0

    0

    0

    0

    math

    math score

    theater

    nemlineris

    0

    0

    0

    0

    0

    0

    math

    math score

    theater

    transzformcik

    0

    0

    0

    0

    0

    0

    0

    math

    math score

    language

    0

    0

    0

    0

    0

    0

    0

    math

    math score

    language

    0

    0

    0

    0

    0

    0

    math

    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

    -2-0.9092974268

    -1.8-0.9738476309

    -1.6-0.999573603

    -1.4-0.98544973

    -1.2-0.932039086

    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    0

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    0

    y

    x

    log y

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    y

    log10 x

    y

    y

    x

    y

    0

    0

    0

    0

    log y

    log x

    log y

    0

    0

    0

    0

    0

    y

    x

    y

    0

    0

    0

    0

    0

    y

    1/x

    y

    Diagram11

    2

    16

    54

    128

    y

    x

    y

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    math

    math score

    theater

    nemlineris

    math

    math score

    theater

    transzformcik

    math

    math score

    language

    math

    math score

    language

    math

    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

    -2-0.9092974268

    -1.8-0.9738476309

    -1.6-0.999573603

    -1.4-0.98544973

    -1.2-0.932039086

    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    y

    x

    y

    y

    x

    log y

    y

    x

    y

    y

    log10 x

    y

    y

    x

    y

    log y

    log x

    log y

    y

    x

    y

    y

    1/x

    y

    Diagram12

    0.3010299957

    1.2041199827

    1.7323937598

    2.1072099696

    log y

    log x

    log y

    adatok

    Nameretailtheatermathlanguage

    Pat5130525550

    Sue5560515535

    Inez5890510535

    Amie6350495520-0.2157385322

    Gene85304304550.7413007121

    Bob9590400420

    Joe1608004100.9989149375

    -0.258397254

    adatok

    math

    math score

    theater

    nemlineris

    math

    math score

    theater

    transzformcik

    math

    math score

    language

    math

    math score

    language

    math

    math score

    retailing

    xy

    -3-0.1411200081

    -2.8-0.3349881502

    -2.6-0.5155013718

    -2.4-0.6754631806

    -2.2-0.8084964038

    -2-0.9092974268

    -1.8-0.9738476309

    -1.6-0.999573603

    -1.4-0.98544973

    -1.2-0.932039086

    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

    -0.2-0.1986693308

    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

    0

    0.1986693308

    0.3894183423

    0.5646424734

    0.7173560909

    0.8414709848

    0.932039086

    0.98544973

    0.999573603

    0.9738476309

    0.9092974268

    0.8084964038

    0.6754631806

    0.5155013718

    0.3349881502

    y

    xylg y

    01.10.0413926852

    11.90.278753601

    240.6020599913

    38.10.9084850189

    4161.2041199827

    xylog x

    10.10

    420.6020599913

    83.010.903089987

    163.91.2041199827

    xylog xlog y

    1200.3010299957

    2160.30102999571.2041199827

    3540.47712125471.7323937598

    41280.60205999132.1072099696

    xy1/x

    11.11

    20.450.5

    30.3330.3333333333

    40.230.25

    50.19990.2

    y

    x

    y

    y

    x

    log y

    y

    x

    y

    y

    log10 x

    y

    y

    x

    y

    log y

    log x

    log y

    y

    x

    y

    y

    1/x

    y

  • Log10 base logarithmic scale*21345678910

    Biostat 3.

    Diagram9

    0

    0.3010299957

    0.4771212547

    0.6020599913

    0.6989700043

    0.7781512504

    0.84509804

    0.903089987

    0.9542425094

    1

    log10 x

    Munka1

    z

    10

    21

    42

    83

    164

    1/2-1

    1/4-2

    1/8-3

    1/16-4

    Exp

    xz

    -20.015625-6

    -1.90.0192366315-5.7

    -1.80.0236830714-5.4

    -1.70.029157281-5.1

    -1.60.0358968236-4.8

    -1.50.0441941738-4.5

    -1.40.0544094102-4.2

    -1.30.0669858414-3.9

    -1.20.0824692444-3.6

    -1.10.1015315495-3.3

    -10.125-3

    -0.90.1538930517-2.7

    -0.80.1894645708-2.4

    -0.70.2332582479-2.1

    -0.60.2871745887-1.8

    -0.50.3535533906-1.5

    -0.40.4352752816-1.2

    -0.30.5358867313-0.9

    -0.20.6597539554-0.6

    -0.10.8122523964-0.3

    -0.090.8293195458-0.27

    -0.080.8467453124-0.24

    -0.070.8645372313-0.21

    -0.060.8827029963-0.18

    -0.050.9012504626-0.15

    -0.040.9201876506-0.12

    -0.030.9395227492-0.09

    -0.020.9592641193-0.06

    -0.010.9794202976-0.03

    010

    0.011.02101212570.03

    0.021.04246576080.06

    0.031.06437018250.09

    0.041.08673486250.12

    0.051.10956947210.15

    0.061.13288388530.18

    0.071.15668818390.21

    0.081.18099266140.24

    0.091.20580782770.27

    0.11.23114441330.3

    0.21.51571656650.6

    0.31.86606598310.9

    0.42.297396711.2

    0.52.82842712471.5

    0.63.48220225321.8

    0.74.28709385012.1

    0.85.27803164312.4

    0.96.49801917082.7

    183

    1.19.84915530683.3

    1.212.12573253213.6

    1.314.92852786463.9

    1.418.379173684.2

    1.522.6274169984.5

    1.627.85761802554.8

    1.734.29675080125.1

    1.842.22425314475.4

    1.951.98415336685.7

    2646

    Exp

    y

    x

    23x

    Exp 10

    x

    log2 y

    y

    y

    2

    4

    8

    16

    1

    1/2

    1/4

    1/8

    1/16

    z

    Exp2

    xz

    -20.000001-6

    -1.90.0000019953-5.7

    -1.80.0000039811-5.4

    -1.70.0000079433-5.1

    -1.60.0000158489-4.8

    -1.50.0000316228-4.5

    -1.40.0000630957-4.2

    -1.30.0001258925-3.9

    -1.20.0002511886-3.6

    -1.10.0005011872-3.3

    -10.001-3

    -0.90.0019952623-2.7

    -0.80.0039810717-2.4

    -0.70.0079432823-2.1

    -0.60.0158489319-1.8

    -0.50.0316227766-1.5

    -0.40.0630957344-1.2

    -0.30.1258925412-0.9

    -0.20.2511886432-0.6

    -0.10.5011872336-0.3

    -0.090.5370317964-0.27

    -0.080.5754399373-0.24

    -0.070.6165950019-0.21

    -0.060.660693448-0.18

    -0.050.7079457844-0.15

    -0.040.758577575-0.12

    -0.030.8128305162-0.09

    -0.020.87096359-0.06

    -0.010.9332543008-0.03

    010

    0.011.07151930520.03

    0.021.14815362150.06

    0.031.23026877080.09

    0.041.31825673860.12

    0.051.41253754460.15

    0.061.51356124840.18

    0.071.62181009740.21

    0.081.73780082870.24

    0.091.86208713670.27

    0.11.9952623150.3

    0.23.98107170550.6

    0.37.94328234720.9

    0.415.84893192461.2

    0.531.62277660171.5

    0.663.0957344481.8

    0.7125.89254117942.1

    0.8251.1886431512.4

    0.9501.18723362732.7

    110003

    1.11995.26231496893.3

    1.23981.0717055353.6

    1.37943.28234724283.9

    1.415848.93192461114.2

    1.531622.77660168384.5

    1.663095.73444801954.8

    1.7125892.5411794175.1

    1.8251188.6431509585.4

    1.9501187.2336272725.7

    210000006

    1/32

    Exp2

    y

    x

    103x

    Munka2

    x

    log10 y

    y

    y

    10

    100

    1000

    10000

    1

    0.1

    0.01

    0.001

    0.0001

    z

    Munka4

    x

    -30.1251.125-0.8750.250.0625-0.1258

    -2.90.13397168281.1339716828-0.86602831720.26794336560.0669858414-0.13397168287.4642639323

    -2.80.14358729441.1435872944-0.85641270560.28717458870.0717936472-0.14358729446.9644045064

    -2.70.15389305171.1538930517-0.84610694830.30778610330.0769465258-0.15389305176.4980191708

    -2.60.16493848881.1649384888-0.83506151120.32987697770.0824692444-0.16493848886.062866266

    -2.50.17677669531.1767766953-0.82322330470.35355339060.0883883476-0.17677669535.6568542495

    -2.40.18946457081.1894645708-0.81053542920.37892914160.0947322854-0.18946457085.2780316431

    -2.30.20306309911.2030630991-0.79693690090.40612619820.1015315495-0.20306309914.9245776534

    -2.20.21763764081.2176376408-0.78236235920.43527528160.1088188204-0.21763764084.59479342

    -2.10.23325824791.2332582479-0.76674175210.46651649580.1166291239-0.23325824794.2870938501

    -20.251.25-0.750.50.125-0.254

    -1.90.26794336561.2679433656-0.73205663440.53588673130.1339716828-0.26794336563.7321319661

    -1.80.28717458871.2871745887-0.71282541130.57434917750.1435872944-0.28717458873.4822022532

    -1.70.30778610331.3077861033-0.69221389670.61557220670.1538930517-0.30778610333.2490095854

    -1.60.32987697771.3298769777-0.67012302230.65975395540.1649384888-0.32987697773.031433133

    -1.50.35355339061.3535533906-0.64644660940.70710678120.1767766953-0.35355339062.8284271247

    -1.40.37892914161.3789291416-0.62107085840.75785828330.1894645708-0.37892914162.6390158215

    -1.30.40612619821.4061261982-0.59387380180.81225239640.2030630991-0.40612619822.4622888267

    -1.20.43527528161.4352752816-0.56472471840.87055056330.2176376408-0.43527528162.29739671

    -1.10.46651649581.4665164958-0.53348350420.93303299150.2332582479-0.46651649582.1435469251

    -10.51.5-0.510.25-0.52

    -0.90.53588673131.5358867313-0.46411326871.07177346250.2679433656-0.53588673131.8660659831

    -0.80.57434917751.5743491775-0.42565082251.1486983550.2871745887-0.57434917751.7411011266

    -0.70.61557220671.6155722067-0.38442779331.23114441330.3077861033-0.61557220671.6245047927

    -0.60.65975395541.6597539554-0.34024604461.31950791080.3298769777-0.65975395541.5157165665

    -0.50.70710678121.7071067812-0.29289321881.41421356240.3535533906-0.70710678121.4142135624

    -0.40.75785828331.7578582833-0.24214171671.51571656650.3789291416-0.75785828331.3195079108

    -0.30.81225239641.8122523964-0.18774760361.62450479270.4061261982-0.81225239641.2311444133

    -0.20.87055056331.8705505633-0.12944943671.74110112660.4352752816-0.87055056331.148698355

    -0.10.93303299151.9330329915-0.06696700851.86606598310.4665164958-0.93303299151.0717734625

    -0.090.93952274921.9395227492-0.06047725081.87904549840.4697613746-0.93952274921.0643701825

    -0.080.94605764671.9460576467-0.05394235331.89211529350.4730288234-0.94605764671.0570180406

    -0.070.9526379981.952637998-0.0473620021.90527599610.476318999-0.9526379981.0497166836

    -0.060.95926411931.9592641193-0.04073588071.91852823870.4796320597-0.95926411931.0424657608

    -0.050.96593632891.9659363289-0.03406367111.93187265780.4829681645-0.96593632891.0352649238

    -0.040.97265494741.9726549474-0.02734505261.94530989480.4863274737-0.97265494741.0281138267

    -0.030.97942029761.9794202976-0.02057970241.95884059520.4897101488-0.97942029761.0210121257

    -0.020.98623270451.9862327045-0.01376729551.9724654090.4931163522-0.98623270451.0139594798

    -0.010.99309249541.9930924954-0.00690750461.98618499090.4965462477-0.99309249541.0069555501

    012020.5-11

    0.011.00695555012.00695555010.00695555012.01391110010.503477775-1.00695555010.9930924954

    0.021.01395947982.01395947980.01395947982.02791895960.5069797399-1.01395947980.9862327045

    0.031.02101212572.02101212570.02101212572.04202425140.5105060629-1.02101212570.9794202976

    0.041.02811382672.02811382670.02811382672.05622765330.5140569133-1.02811382670.9726549474

    0.051.03526492382.03526492380.03526492382.07052984770.5176324619-1.03526492380.9659363289

    0.061.04246576082.04246576080.04246576082.08493152170.5212328804-1.04246576080.9592641193

    0.071.04971668362.04971668360.04971668362.09943336720.5248583418-1.04971668360.952637998

    0.081.05701804062.05701804060.05701804062.11403608110.5285090203-1.05701804060.9460576467

    0.091.06437018252.06437018250.06437018252.12874036490.5321850912-1.06437018250.9395227492

    0.11.07177346252.07177346250.07177346252.14354692510.5358867313-1.07177346250.9330329915

    0.21.1486983552.1486983550.1486983552.297396710.5743491775-1.1486983550.8705505633

    0.31.23114441332.23114441330.23114441332.46228882670.6155722067-1.23114441330.8122523964

    0.41.31950791082.31950791080.31950791082.63901582150.6597539554-1.31950791080.7578582833

    0.51.41421356242.41421356240.41421356242.82842712470.7071067812-1.41421356240.7071067812

    0.61.51571656652.51571656650.51571656653.0314331330.7578582833-1.51571656650.6597539554

    0.71.62450479272.62450479270.62450479273.24900958540.8122523964-1.62450479270.6155722067

    0.81.74110112662.74110112660.74110112663.48220225320.8705505633-1.74110112660.5743491775

    0.91.86606598312.86606598310.86606598313.73213196610.9330329915-1.86606598310.5358867313

    123141-20.5

    1.12.14354692513.14354692511.14354692514.28709385011.0717734625-2.14354692510.4665164958

    1.22.297396713.297396711.297396714.594793421.148698355-2.297396710.4352752816

    1.32.46228882673.46228882671.46228882674.92457765341.2311444133-2.46228882670.4061261982

    1.42.63901582153.63901582151.63901582155.27803164311.3195079108-2.63901582150.3789291416

    1.52.82842712473.82842712471.82842712475.65685424951.4142135624-2.82842712470.3535533906

    1.63.0314331334.0314331332.0314331336.0628662661.5157165665-3.0314331330.3298769777

    1.73.24900958544.24900958542.24900958546.49801917081.6245047927-3.24900958540.3077861033

    1.83.48220225324.48220225322.48220225326.96440450641.7411011266-3.48220225320.2871745887

    1.93.73213196614.73213196612.73213196617.46426393231.8660659831-3.73213196610.2679433656

    245382-40.25

    2.14.28709385015.28709385013.28709385018.57418770032.1435469251-4.28709385010.2332582479

    2.24.594793425.594793423.594793429.189586842.29739671-4.594793420.2176376408

    2.34.92457765345.92457765343.92457765349.84915530682.4622888267-4.92457765340.2030630991

    2.45.27803164316.27803164314.278031643110.55606328622.6390158215-5.27803164310.1894645708

    2.55.65685424956.65685424954.656854249511.3137084992.8284271247-5.65685424950.1767766953

    2.66.0628662667.0628662665.06286626612.12573253213.031433133-6.0628662660.1649384888

    2.76.49801917087.49801917085.498019170812.99603834173.2490095854-6.49801917080.1538930517

    2.86.96440450647.96440450645.964404506413.92880901273.4822022532-6.96440450640.1435872944

    2.97.46426393238.46426393236.464263932314.92852786463.7321319661-7.46426393230.1339716828

    3897164-80.125

    3.18.57418770039.57418770037.574187700317.14837540064.2870938501-8.57418770030.1166291239

    3.29.1895868410.189586848.1895868418.379173684.59479342-9.189586840.1088188204

    3.39.849155306810.84915530688.849155306819.69831061354.9245776534-9.84915530680.1015315495

    3.410.556063286211.55606328629.556063286221.11212657245.2780316431-10.55606328620.0947322854

    3.511.31370849912.31370849910.31370849922.6274169985.6568542495-11.3137084990.0883883476

    3.612.125732532113.125732532111.125732532124.25146506426.062866266-12.12573253210.0824692444

    3.712.996038341713.996038341711.996038341725.99207668346.4980191708-12.99603834170.0769465258

    3.813.928809012714.928809012712.928809012727.85761802556.9644045064-13.92880901270.0717936472

    3.914.928527864615.928527864613.928527864629.85705572927.4642639323-14.92852786460.0669858414

    4161715328-160.0625

    1/32

    Munka4

    2x

    2x+1

    2x-1

    2x

    2x +1

    2x -1

    Munka3

    2x

    2x+1

    2x-1

    2x

    2x +1

    2x -1

    2x

    -2x

    2x

    2-x

    2x

    2x +1

    yzxlog10 x

    1610

    20.3010

    30.4771

    40.6021

    50.6990

    60.7782

    70.8451

    480.9031

    8390.9542

    2101

    1

    0

    4-1

    -2

    2-3

    1-4

    0-5

    log10 x

    xsin x2 sin x(sin x )/2sin 2xsin (x/2)

    000000

    0.020.01999866670.03999733340.00999933330.03998933420.0099998333

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    0.060.05996400650.1199280130.02998200320.11971220730.0299955002

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    1.380.98185353041.96370706070.49092676520.37239903940.6365371822

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    1.60.9995736031.99914720610.4997868015-0.05837414340.7173560909

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    1.680.99404320221.98808640440.4970216011-0.21667508040.74464312

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    1.720.9888897661.9777795320.494444883-0.29399831240.7578425629

    1.740.98571917881.97143835770.4928595894-0.33198518820.764328937

    1.760.98215431711.96430863430.4910771586-0.36944095850.7707388789

    1.780.97819660681.95639321360.4890983034-0.40630570210.7770717475

    1.80.97384763091.94769526180.4869238154-0.44252044330.7833269096

    1.820.96910912891.93821825780.4845545644-0.47802724610.7895037397

    1.840.96398299621.92796599230.4819914981-0.51276930740.79560162

    1.860.95847128311.91694256620.4792356415-0.54669104710.8016199409

    1.880.95257619431.90515238850.4762880971-0.57973819770.8075581004

    1.90.94630008771.89260017540.4731500438-0.61185789090.8134155048

    1.920.93964547371.87929094740.4698227368-0.64299874210.8191915683

    1.940.9326150141.8652300280.466307507-0.67311093230.8248857133

    1.960.92521152081.85042304160.4626057604-0.70214628870.8304973705

    1.980.91743795531.83487591060.4587189776-0.73005836080.8360259786

    20.90929742681.81859485370.4546487134-0.75680249530.8414709848

    2.020.90079319151.8015863830.4503965958-0.78233590720.8468318446

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    2.060.88270735081.76541470160.4413536754-0.82960917360.8572989892

    2.080.87313297951.7462659590.4365664898-0.85127340090.8624042272

    2.10.86320936661.72641873330.4316046833-0.87157577240.8674232256

    2.120.85294048161.70588096310.4264702408-0.89048380860.8723554823

    2.140.84233043161.68466086330.4211652158-0.90796726060.8772005043

    2.160.83138346081.66276692160.4156917304-0.92399815870.8819578069

    2.180.82010394761.64020789520.4100519738-0.93855085690.8866269144

    2.20.80849640381.61699280760.4042482019-0.95160207390.8912073601

    2.220.79656547221.59313094450.3982827361-0.96313093060.8956986857

    2.240.78431592511.56863185020.3921579625-0.97311898320.9001004422

    2.260.7717526621.5435053240.385876331-0.98155025310.9044121894

    2.280.75888070821.51776141640.3794403541-0.98841125190.9086334961

    2.30.74570521221.49141042440.3728526061-0.99369100360.9127639403

    2.320.7322314441.46446288810.366115722-0.99738106170.9168031088

    2.340.71846479311.43692958610.3592323965-0.99947552280.9207505977

    2.360.70441076581.40882153150.3522053829-0.99997103630.9246060124

    2.380.69007498361.38014996710.3450374918-0.99886680950.9283689672

    2.40.67546318061.35092636110.3377315903-0.99616460880.932039086

    2.420.66058120131.32116240260.3302906006-0.99186875730.9356160016

    2.440.64543499831.29086999670.3227174992-0.98598612740.9390993563

    2.460.630030631.260061260.315015315-0.97852612990.9424888019

    2.480.61437425781.22874851560.3071871289-0.96950069950.9457839994

    2.50.59847214411.19694428820.2992360721-0.95892427470.9489846194

    2.520.58233064951.1646612990.2911653248-0.94681377560.9520903416

    2.540.56595623041.13191246090.2829781152-0.93318857650.9551008556

    2.560.54935543641.09871087290.2746777182-0.91807047470.9580158603

    2.580.53253490761.06506981510.2662674538-0.9014836560.9608350642

    2.60.51550137181.03100274360.2577506859-0.88345465570.9635581854

    2.620.49826164240.99652328480.2491308212-0.86401231650.9661849516

    2.640.4808226150.961645230.2404113075-0.84318774190.9687151001

    2.660.46319126490.92638252990.2315956325-0.82101424670.9711483779

    2.680.44537464450.89074928910.2226873223-0.79752730390.9734845417

    2.70.42737988020.85475976050.2136899401-0.77276448760.9757233578

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    6.90.57843976441.15687952880.28921988220.9436956694-0.3035415127

    6.920.59463749471.18927498940.29731874730.9561698803-0.3130543591

    6.940.61059737791.22119475580.3052986890.9671144233-0.3225359003

    6.960.62631303031.25262606060.31315651520.9765117895-0.3319851882

    6.980.64177816591.28355633170.32088908290.9843469452-0.3414012779

    70.65698659871.31397319740.32849329940.9906073557-0.3507832277

    sin x

    2 sin x

    (sin x )/2

    sin x

    sin 2x

    sin (x/2)

  • Logarithmic papers*Semilogarithmic paperlog-log paper

    Biostat 3.

    Krisztina Boda Krisztina Boda

    Reciprocal relationship ->take reciprocal of xModel: y=a +b/xy=a +b*1/xso y is linear in 1/x*

    adatok

    Nameretailtheatermathlanguage

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    Sue5560515535

    Inez5890510535

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    -0.258397254

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    -1-0.8414709848

    -0.8-0.7173560909

    -0.6-0.5646424734

    -0.4-0.3894183423

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    00

    0.20.1986693308

    0.40.3894183423

    0.60.5646424734

    0.80.7173560909

    10.8414709848

    1.20.932039086

    1.40.98544973

    1.60.999573603

    1.80.97384763090.7964355021

    20.9092974268

    2.20.80849640380.1574204489

    2.40.6754631806

    2.60.5155013718

    2.80.3349881502

    30.1411200081

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