ms excel questions set iihafizahiszah.tripod.com/asign_word1.doc · web viewto replicate the...

document.doc, 5/18/23, 12:11 PMKOS 1110 Computers in ScienceAssignment 1 - Questions in Excel

Due on or before Monday, 25-9-2006, 10am

1. What is the difference between Microsoft Excel and Microsoft Word? What are the functions, advantages and disadvantages of both programs?

Microsoft Excel can evaluate the numeric calculation precisely, whereas Microsoft

Word can perform a data in many ways such as memo and letter.

The advantages for Microsoft Excel, other can perform the calculation, it can attach

with graph. Also can edit and format data as fast as it can. For the Microsoft Word, it

can create, retrieve and print the data.

The disadvantages for Microsoft Excel, it cannot detect the spelling error or

grammatically error whereas Microsoft Word cannot calculate accurately.

2. What are the differences between a cell, worksheet and a workbook?

Cell is where information is typed; the intersection of column and a row. A

worksheet is a single sheet while a workbook contains multiple worksheets

represented by Tabs at the bottom of the Excel screen.

How to color code sheet tabs to make them easier to be recognized?

To color code sheet, click at sheet1 and right click. Then choose the color and

then OK.

How to view different parts of a worksheet at the same time? How to view different worksheets at the same time?

To view and scroll independently in different parts of a worksheet, you can

split a worksheet horizontally and vertically into separate panes. Splitting a

worksheet into panes allows you to view different parts of the same worksheet

side by side. Go to Window and choose split. It can view the sheet in same

time.

Hafizah binti bahaludin,9/24/06,12:11:06 PM 1

document.doc, 5/18/23, 12:11 PM

3. What happen when you hide parts of a workbook? When you hide parts of a workbook, the data is removed from view but is not

deleted from the workbook

When it comes to printing does it print the hidden parts of a workbook?

If you print the workbook, Microsoft Excel does not print the hidden parts.

How do you prevent others from displaying hidden sheets, rows or columns?

To prevent others from displaying hidden sheets, rows, or columns, you can

protect the workbook or sheet with a password

What can be hidden from applying the ‘hide’ command?You can hide workbooks and sheets to reduce the number of windows and

sheets on the screen and to prevent unwanted changes. You can also hide

selected rows and columns of data that you aren't using or that you don't want

others to see. You can hide most window elements in order to use as much of

your screen as possible to display worksheet data.

4. How do you transfer the inserted content from one cell to another?

To transfer the inserted content from one cell to another, select the cell and right click

and choose copy then paste at the another cell or can use edit cut. From the menu bar,

selected edit cut. Then, click where the cell are to be moved and edit paste.

How do you replicate a sequence such as the following?


Monday

Tuesday

Wednesday

Thursday

Friday

document.doc, 5/18/23, 12:11 PMTo replicate the sequence, enter the ‘pattern to be replicate. Right click with the

mouse on the small square (Fill handle) in the lower right of the cell containing the

pattern (the mouse pointer changes to a ‘+’). While holding the right mouse button,

drag to select the area to be filled with the matching data.

What are the other kinds of data sequences that can be created?

Kinds of data sequence that can be created such as consecutive numbers, numbers in

pattern (odd or even), days of the week, month, year, dates and etc

5. How do you merge scenarios from another worksheet? In what type of conditions can you do so?Steps for merged scenario from another worksheet:

1. Open all of the workbooks that contain the scenarios you want to merge.

2. Switch to the worksheet where you want to merge the scenarios.

3. On the Tools menu, click Scenarios.

4. Click Merge.

5. In the Book box, click a workbook name.

6. In the Sheet box, click the name of a worksheet that contains the scenarios you

want to merge, and then click OK.

7. Repeat this process if you want to merge scenarios from more worksheets.

It is easier to merge scenarios when all what-if models on the worksheets are identical

6. How do you create headers and footers in Microsoft Excel?

Select Header and Footer from the View menu. To create a header, enter text

or graphics in the header area. Or click a button on the Header and Footer

toolbar. To create footer, click Switch between Header and Footer to move to

the footer area. Then, repeat the same step as creating the header.


document.doc, 5/18/23, 12:11 PMCan you insert a graphics in header and footer?

Yes, we can insert a graphics in header and footer. Steps for insert a graphics

in header and footer:

1. On the View menu, click Header and Footer.

2. Click Custom Header or Custom Footer.

3. Click in the Left section, Center section, or Right section box.

4. On the row of buttons in the Header or Footer dialog box, click Insert Picture

and then find the graphic you want to insert.

5. Double-click the graphic to insert it in the header or footer section box.

7. Which reference style refers to columns with letters and rows with numbers? Which reference style can be used to analyze data in the same cell or range of cells on multiple worksheets within the workbook? Which reference style indicates the location of a cell with an ‘R’ followed by a row number and a ‘C’ followed by a column number?

Types of references style:

1) The A1 reference style: Refers to columns with letters (A through IV, for a total of 256 columns) and refers to rows with

numbers (1 through 65536). These letters and numbers are called row and column headings. To

refer to a cell, enter the column letter followed by the row number. For example, B2 refers to the

cell at the intersection of column B and row 2.

To refer to Use

The cell in column A and row 10 A10

The range of cells in column A and rows 10 through 20 A10:A20

The range of cells in row 15 and columns B through E B15:E15

All cells in row 5 5:5

All cells in rows 5 through 10 5:10

All cells in column H H:H


document.doc, 5/18/23, 12:11 PMAll cells in columns H through J H:J

The range of cells in columns A through E and rows 10 through 20 A10:E20

Reference to another worksheet In the following example, the AVERAGE worksheet

function calculates the average value for the range B1:B10 on the worksheet named

Marketing in the same workbook

2)the difference between relative and absolute references

Relative references A relative cell reference in a formula, such as A1, is based on the

relative position of the cell that contains the formula and the cell the reference refers to. If

the position of the cell that contains the formula changes, the reference is changed. If you

copy the formula across rows or down columns, the reference automatically adjusts. By

default, new formulas use relative references. For example, if you copy a relative

reference in cell B2 to cell B3, it automatically adjusts from =A1 to =A2

Absolute references An absolute cell reference in a formula, such as $A$1, always

refer to a cell in a specific location. If the position of the cell that contains the formula

changes, the absolute reference remains the same. If you copy the formula across rows or

down columns, the absolute reference does not adjust. By default, new formulas use

relative references, and you need to switch them to absolute references. For example, if

you copy a absolute reference in cell B2 to cell B3, it stays the same in both cells =$A$1.

Mixed references A mixed reference has either an absolute column and relative row,

or absolute row and relative column. An absolute column reference takes the form $A1,

$B1, and so on. An absolute row reference takes the form A$1, B$1, and so on. If the

position of the cell that contains the formula changes, the relative reference is changed,

and the absolute reference does not change. If you copy the formula across rows or down

columns, the relative reference automatically adjusts, and the absolute reference does not

adjust

3) The 3D reference style


document.doc, 5/18/23, 12:11 PMIf you want to analyze data in the same cell or range of cells on multiple worksheets

within the workbook, use a 3-D reference. A 3-D reference includes the cell or range

reference, preceded by a range of worksheet names. Excel uses any worksheets stored

between the starting and ending names of the reference. For example,

=SUM(Sheet2:Sheet13!B5) adds all the values contained in cell B5 on all the worksheets

between and including Sheet 2 and Sheet 13.

You can use 3-D references to refer to cells on other sheets, to define names, and

to create formulas by using the following functions: SUM, AVERAGE,

AVERAGEA, COUNT, COUNTA, MAX, MAXA, MIN, MINA, PRODUCT,

STDEV, STDEVA, STDEVP, STDEVPA, VAR, VARA, VARP, and VARPA.

3-D references cannot be used in array formulas.

3-D references cannot be used with the intersection operator (a single space) or in

formulas that use implicit intersection.

4) The R1C1 reference style

You can also use a reference style where both the rows and the columns on the worksheet

are numbered. The R1C1 reference style is useful for computing row and column

positions in macros. In the R1C1 style, Excel indicates the location of a cell with an "R"

followed by a row number and a "C" followed by a column number.

Reference Meaning

R[-2]C A relative reference to the cell two rows up and in the same column

R[2]C[2] A relative reference to the cell two rows down and two columns to the right

R2C2 An absolute reference to the cell in the second row and in the second column

R[-1] A relative reference to the entire row above the active cell

R An absolute reference to the current row

Reference style refers to columns with letters and rows with numbers: the A1 reference

style

Reference style can be used to analyze data in the same cell or range of cells on multiple

worksheets within the workbook: the 3-D reference style


document.doc, 5/18/23, 12:11 PMReference style indicates the location of a cell with an ‘R’ followed by a row number and

a ‘C’ followed by a column number: the R1C1 reference style

8. Define operator symbols. List down the symbols used and its functions.

Operators specify the type of calculation that we want to perform on the

elements of a formula. Microsoft Excel includes four different types of

calculation operators which are arithmetic, comparison, text, and reference.

i) Arithmetic operators - To perform basic mathematical operations such as

addition, subtraction, or multiplication, combine

numbers and produce numeric results

ARITHMETIC OPERATORS MEANING

+ (plus sign) Addition

– (minus sign) Subtraction

Negation

* (asterisk) Multiplication

/ (forward slash) Division

% (percent sign) Percent

^ (caret) Exponentiation

ii) Comparison Operators - We can compare two values with the following

operators. When two values are compared by using

these operators, the result is a logical value either

TRUE or FALSE.

COMPARISON OPERATORS MEANING ( EXAMPLE )



= (equal sign) Equal to

> (greater than sign) Greater than

< (less than sign) Less than

>= (greater than or equal to sign) Greater than or equal to

<= (less than or equal to sign) Less than or equal to

<> (not equal to sign) Not equal to

iii) Text operators - Use the ampersand (&) to join, or concatenate, one or more

text strings to produce a single piece of text.

TEXT

OPERATOR

MEANING ( EXAMPLE )

&(ampersand) Connects, or concatenates, two values to produce

one continuous text value ("North"&"wind")

iv) Reference Operators - Combine ranges of cells for calculations with the

following operators.

REFERENCE

OPERATOR

MEANING (EXAMPLE )

:

(colon)

Range operator, which produces one reference to

all the cells between two references, including the

two references (B5:B15)



,

(comma)

Union operator, which combines multiple

references into one reference

(SUM(B5:B15,D5:D15))

(space)

Intersection operator, which produces on reference

to cells common to the two references (B7:D7

C6:C8)

9. What is the difference between the formula bar and the name box?

Formula bar is a bar near the top of the window that displays the constant

value or formula used in the active cell. Name box is the box at the left end of

the formula that identifies the selected cell, chart item or drawing object

What happen when you move a formula?When you move a formula, the cell references within the formula do not

change

Would the cell reference change when you copy a formula?When you copy a formula, the cell references may change based on the type

of reference used.

What happen to the name box when you select a range of cells?

When you select a range of cells, it will appear a name range of cells.

10. What is the difference between deleting a column and erasing the content of a column? Explain what would happen in both conditions?


document.doc, 5/18/23, 12:11 PMDeleting the column: Microsoft Excel removes the cell contents but does not

remove any comments or cell formats.

Erasing the contents of a column: Microsoft Excel removes the contents,

formats, comments, or all three from a cell.

If we click a cell and then press DELETE or BACKSPACE on the keyboard,

Excel removes the cell contents but does not remove comments or cell formats

If we clear a cell, the value of a cleared cell is 0 (zero), and a formula that

refers to that cell receives a value of 0.

11. What is the function of ‘freeze panes’? What happen when you freeze an external data range?

Freezing panes allows you to select data that remains visible when scrolling in

a sheet.

Freezing an external data range retains the data but not its underlying query,

so a frozen external data range cannot be refreshed.

12. By using Excel Help facilities, provide the following information:

a) maximum number of significant digits = 1*10^308

b) largest allowed negative number = -2.2250738585072E-308

c) smallest allowed positive number = 2.229E-308

d) maximum length of formula contents = 1,024 characters

13. Define trendline. How do you add a trendline to a chart? Is it possible to obtain the R-squared value and the equation through this command?

Trendline is a graphic representation of trends in data series. Trendline are used for

the study of problems of prediction, also called regression analysis.

Steps to add trendline to a chart:

1. Click the data series to which you want to add a trendline or moving average.

2. On the Chart menu, click Add Trendline.


document.doc, 5/18/23, 12:11 PM3. On the Type tab, click the type of regression trendline or moving average you

want.

o If you select Polynomial, enter in the Order box the highest power for the

independent variable.

o If you select Moving Average, enter in the Period box the number of

periods to be used to calculate the moving average.

We can obtain the R-squared value and the equation through this command. The

steps are:

1. Click the trendline for which you want to display the R-squared value.

2. On the Format menu, click Selected Trendline.

3. On the Options tab, select Display R-squared value on chart.

14. How do you protect a workbook? To protect a workbook, choose Tools from the Menu Bar, select Protect Worksheet

from Protection option. Then, enter the password (optional).

How do you protect worksheet elements?To unlock cells for all users, you can use the Protection tab of the Format Cells

dialog box. To unlock cells for specific users, you can use the Allow Users to

Edit Ranges dialog box. Any ranges that you specify in this dialog box and don't

assign a password for are also unlocked for all users. The cells you leave locked

become protected only after you protect the worksheet.

When we protect a structure within a workbook, what kinds of limitations are imposed upon fellow users?

When selected, users are prevented from:

Viewing worksheets that you have hidden.

Moving, deleting, hiding, or changing the names of worksheets.

Inserting new worksheets or chart sheets. Users can add embedded charts to

existing worksheets by running the Chart Wizard.

Moving or copying worksheets to another workbook.


document.doc, 5/18/23, 12:11 PM In PivotTable reports, displaying the source data for a cell in the data area, or

displaying page field pages on separate worksheets.

For scenarios, creating a scenario summary report.

In the Analysis ToolPak, using the analysis tools that place results on a new

worksheet.

Recording new macros. If you run a macro that includes an operation that can't be

performed in a protected workbook, a message appears and the macro stops

running.

Windows When selected prevents users from:

Changing the size and position of the windows for the workbook when the

workbook is opened.

Moving, resizing, or closing the windows. However, they can hide and unhide

windows.

15. Create a list of x and y values of different variables. Make a table with data points along with their error values, and draw a graph with errors bars shown (BEWARE OF LABELING).

(QUESTION15)

16. How many types of SIN function available within MS Excel? Describe and give examples in your own words.

Five types of SIN function available within MS Excel. That is:

TYPES EXPLANATION EXAMPLES

SIN *Number is the angle in

radians for which you want

the sine

=SIN (PI())



*If your argument is in

degrees, multiply it by

PI()/180 or use the

RADIANS function to

convert it to radians

ASIN *Returns the arcsine, or

inverse sine, of a number.

The arcsine is the angle

whose sine is number. The

returned angle is given in

radians in the range -pi/2 to

pi/2.

sine of the angle you want

and must be from -1 to 1

=ASIN(0.5)

ASINH *Returns the inverse

hyperbolic sine of a

number. The inverse

hyperbolic sine is the value

whose hyperbolic sine is

number, so ASINH (SINH

(number)) equals number.

*any real number

=ASINH(-2.3)

IMSIN *Returns the sine of a

complex number in x + yi

or x + yj text format

=IMSIN(“3+4i)



*a complex number for

which you want the sine

SINH *Returns the hyperbolic

sine of a number

*Any real number

=SIN(-1)

17. The angle for a function should be in radians. So from the following angles, use EXCEL to obtain the Tangent function. (Hint: Use fill handle to avoid re-entering of the same formula).

(a) 180°(b) 45°(c) 75°(d) 36°(e) 236°(QUESTION 17)

18. Multiplot : Write down any one formula with three constants (a, b and c) and one variable (x). (eg. y=a sin(bx) + c or y=a x + b log (x) - c …etc). You can also make up your own formula. Use Excel to calculate your chosen formula for a range of x values at five different sets of constant values and tabulate them as x vs y with x in the first column and y in the next four columns as follows:



No. xy values calculated using different set of constants

a= …. b=… a= …. b=… a= …. b=… a= …. b=…

Then, plot all the four curves in the same plot and label them differently. Comment on the effect of the constants on these plots.

(QUESTION 18)19. By using any of your selected formula, perform

calculations by entering the constants and variables separately. For example, force =…..units, density = ….

(QUESTION 19)

20. Write a set of four simultaneous equations with four variables and solve them using Excel. Verify your answer by back substitution. (HINT: Use Solver)

(QUESTION 20)

21. Solve the following equation: 3x3+5x2+x-16=0, with your own initial guess. Find the value of x. Select another 5 equations from any of your text books or assignments and solve it using Goal Seek.

(QUESTION 21)


document.doc, 5/18/23, 12:11 PM22. Grades distribution: Consider a class consisting of 12 to

20 students. Create their mark list in their final exam. The list should contain their names and their marks in two columns. Use the nested “if condition” to determine their grades (eg. A, B ….) and list them in the third column. Present their grade distribution as a histogram and as a pie chart.

(QUESTION 22)

23. Solve Van der Waals's equation: (P + a/V2)(V - b)=RT, for the volume per mole (V) of an organic compound at 10 atm pressure and 400oK. The Van der Waals's constants for this particular compound are a = 40.0 liter2 atm/mole2 and b = 0.2 liter/mole. (Hint: use Goal Seek)

(QUESTION 23)24. The following data set is obtained in an experiment:

R V

0.5 127.0355

1.0 48.0715

1.5 12.1348

2.0 8.3139

2.1 5.3366

2.2 3.1064

2.3 1.5361

2.4 0.5472

2.5 0.0689

2.6 0.0374

2.7 0.3957

2.8 1.0921

2.9 2.0807

3.0 3.3199

3.1 4.7728Hafizah binti bahaludin,9/24/06,12:11:06 PM

16


3.2 10.0998

3.5 20.7786

4.0 31.9924

4.5 42.6319

5.0 52.1824

5.5 60.4667

6.0 67.4911

Use the solver module in Excel to fit the data using the equation

V=a(1-exp(-b(R-c)))2,

where a, b and c are constants to be determined. Use solver to determine these constants. Calculate the V values using the values of a, b and c that you had found out by excel. Plot the experimental and the calculated data in the same plot and label them properly. What is the value of V at R=1.25 and R=c?

(QUESTION 24)25. The Maxwell-Boltzmann distribution for molecular speeds

is given by:

> := n 4

m2 k T

32

e

m c2

2 k Tc2 dc

where n is the fraction of the molecules having speed between c and c+dc. Calculate and plot the values of n for a range of speeds for H2 molecule having a mass of 0.332x10-

26 kg/molecule at the temperatures of 100K, 300K and 1000K. The value of the Boltzmann constant (k) is


document.doc, 5/18/23, 12:11 PM1.38066x10-23 J/molecule. For simplicity you can ignore the units in these calculations. Use a range of 0 to 5000 m/s at the intervals of 200 m/s for the speed. Assume dc=1. Hint: Make a table such as..:

Speed (m/s)

n for T=100 K

n for T=300 K

n for T=1000 K

(QUESTION 25)

26. Computerization of the laboratory report : Present any of your experimental laboratory report involving detailed calculations and graphs, as an Excel workbook. Your report should be self-contained and contain all the details to verify your graphs and results. In short it should look

(QUESTION 26)


ms excel questions set iihafizahiszah.tripod.com/asign_word1.doc · web viewto replicate the...

Documents