TA Conference on Teaching and Learning UW - September 2006

Excel for Grading: The Basics for Beginners

David Montero


 

 

Microsoft Campus Agreement ~ Google Spreadsheets ~ OpenOffice Calc

 

1. Opening Excel

Start -> All Programs -> Microsoft Office -> Excel
Start -> Run -> excel.exe

2. Excel Toolbar

3. Terminology

Workbook corresponds to a file on your hard drive. Made up of one or more worksheets.
Worksheet belongs to a workbook and is made up of rows and columns.
Column belongs to a worksheet. Contains a set of vertically arranged cells. Identified by letters A, B, C, Z, AA, ABB, etc.
Row belongs to a worksheet. Contains a set of horizontally arranged cells. Identified by numbers 1-...
Cell belongs to one row and one column. Contains a value in the form of data or a formula. Referenced by a cell "address" made up of the column identifier (letter) following by the row identifier (number). For example, B6 or F22.
Numeric Data numeric data is made up entirely of digits and may be added to, multiplied or divided. A grade is numeric data. A student number is not numeric data because it does not make sense to do calculation on a student number.
Character Data (Text) character data may contain any combinations of symbol. May not be used in calculations.
Formula a formula specifies a sequence of operations on cell contents. Operators (+, -, *, /) are used to create formulas.
Function a function is a built-in formula provided by Excel.

4. Selecting Cells

Before a cell can be modified or formatted, it must first be selected (highlighted).

Cells to Select Mouse Action
One cell Click once in the cell
Entire row Click the row label
Entire column Click the column label
Entire worksheet Click the Whole Sheet button located above the column of row labels and to the left of the row of column labels, or press <Ctrl>A
Cluster of cells Drag mouse over the cells or hold down the <Shift> key while using the arrow keys

5. Moving Through Cells

Movement ActionKey Combination
One cell up up arrow key
One cell down down arrow key or <Enter>
One cell left left arrow key
One cell right right arrow key or <Tab>
Top of the worksheet (cell A1) <Ctrl><Home>
End of the worksheet (last cell containing data) <Ctrl><End>
End of the row <Ctrl>right arrow key
End of the column <Ctrl>down arrow key
Any cell Edit > Go To menu bar command

6. Saving a workbook

File -> Save As (choose a location on the computer and give a name to your workbook/file)
OR: press <Ctrl> S

7. Download the practice Excel file here (save the file to your desktop).

8. Basic Formulas

The most common operators used for writing formulas are:

+
Sum
-
Substraction
*
Multiplication
/
Division

9. Basic Functions

Functions can be a more efficient way of performing mathematical operations than formulas. For example, if you wanted to add the values of cells D1 through D10, you would type the formula "=D1+D2+D3+D4+D5+D6+D7+D8+D9+D10". A shorter way would be to use the SUM function and simply type "=SUM(D1:D10)".

Function Example Description
SUM =SUM(A1:100) Finds the sum of cells A1 through A100
AVERAGE =AVERAGE(B1:B10) Finds the average of cells B1 through B10
MAX =MAX(C1:C100) Returns the highest number from cells C1 through C100
MIN =MIN(D1:D100) Returns the lowest number from cells D1 through D100

10. AutoSum

  1. Select the cell that the sum will appear in that is outside the cluster of cells whose values will be added. Cell C2 is used in this example.
  2. Click the AutoSum button (Greek letter sigma) on the standard toolbar:
  3. Highlight the group of cells that will be summed (cells A2 through B2 in this example).
  4. Press the <Enter> key on the keyboard or click the green check mark button on the formula bar .


11. Autofill

To avoid errors in typing a formula which is used throughout a column, use the autofill tool. Click once on the cell containing the formula, click the fill handle (+), drag the cells to include the desired number of cells and release the mouse button. The formula now applies to all the cells you selected.

12. Relative and absolute referencing

Relative referencing: When you copy this formula to another cell, Excel automatically adjusts the cell reference to refer to different cells relative to the position of the formula.

Absolute referencing: When the cell reference must remain the same when copied or using Autofill. $ is used in combination with the column reference (letter) or with the row reference (number).

13. Sorting Columns

Select the cells you want to sort. Click on the sort button:

14. Showing 2 decimal places only

Select the cell. Go to Format -> Cells -> Number tab -> Number -> Decimal Places = 2.

15. Freeze panes

Select the column tothe right of where you want the split to appear. Go to the Window menu, click Freeze Panes.

16. Copying students' names on several worksheets

The original list is at (A1:A20): in the worksheet where you want the names to appear, click on the first cell and type in =, then use the mouse to click on the student in A1. Press <enter>. The name is now on your second worksheet. Use Autofill for the other names.

17. Creating a simple bar graph

Select the table containing the data you want to use (click and drag). Click on the Chart Wizard button:

Chose a chart type and a chart sub-type. Click Next. Click Finish (you can modify the chart in many ways, see references below for more details).

18. Possible harmless problems

Marching ants: press the escape key to remove them around a selected cell.
######: too many numbers or text too long to be displayed. Widen column to fix this.
#NAME?: you entered the name of the formula incorrectly.
#REF!: The formula refers to a cell that is not valid.
#DIV/0!: The formula is trying to divide by zero.

See a sample grade sheet with 100 to GPA automated conversion and other functions and formulas.

References

To learn more about Excel online: Catalyst Excel Workshop, official Microsoft Excel page.

To learn more about Excel at the library: Microsoft Office for Teachers (LB 1028.3 F48 2003), MS Excel 2003: Top 100 Simplified Tips and Tricks (HF 5548.4 M523 P43 2005).

When you're stuck: don't forget to use the Excel Help menu (contains lots of answers explained in simple language). The internet also has a ton of explanations: just google Excel and the name of the function you're trying to use to find examples.