Download - Graphing Basics - Physical Science
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Graphing DataShowing patterns & trends
2010-2011
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Types of data (information)
Variables dependent variable
measured variable unpredictable change: we don’t know how it will
change until we do the investigation Y-axis
independent variable manipulated variable predictable change: it only
changes because we chose how it would change
X-axis Constant Variables
Remain the same throughout the experiment
Physical Science
The effect of _____________
on _____________
Independent Variable
Dependent Variable
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Examples of experiment - A How does volume of sample affect the mass of
a metal? we set up an experiment massing different size
cubes of the same metal dependent variable (Y-axis)?
Mass of cube independent variable (X-axis)?
Volume of cube)
Physical Science
The effect of _____________
on _____________
volume
Mass of a metal
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Examples of experiments -B
How does initial height affect final velocity of a dropped ball? we set up an experiment testing different initial
heights (m) on the final velocity (in m/s) of a dropped basketball: dependent variable (Y-axis)?
Final velocity(m/s) independent variable (X-axis)?
Initial height (m)
Physical Science
The effect of
on ____
Initial Height
Final velocity
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Examples of experiments C
What’s the favorite candy bar of students? we set up an experiment surveying students and
asking which is their favorite candy bar : dependent variable (Y-axis)?
number of students independent variable (X-axis)?
type of candy
Physical Science
The effect of _____________
on _____________
Candy Bar type
Number of students
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Making pictures out of data
Graphs line graph
Use when data shows a trend or continuous change bar graph (or histograms)
Use when graphing data that is in disconnected groups
Physical Science
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Physical Science
How does elevation affect temperature?
elevation
Te
mp
era
ture
(•C
)
5
10
15
20
25
30
0 500 1000 1500 2000 25000
elevation (feet above sea level)
temp.
(°C)
0 30
500 25
1000 20
1500 15
2000 10
2500 5
1200 ft?
18
Line graph!
1200
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Physical Science
Which Candy Bar do you like best?
nu
mb
er
of
stu
den
ts
1
2
3
4
5
6
Almond JoyMilky Way Kit Kat Snickers M&Ms0
Brand number
Almond Joy 1
Milky Way 1
Kit Kat 4
Snickers 4
M&M’s 3
Reese’s Cup??
RCRC
Bar graph!