# Using Excel Many of the statistical methods discussed in this book can be computed using Microsoft’s powerful and popular spreadsheet program Excel.  The Data Analysis ToolPak is not installed with the standard Excel setup.  Look in the Tools menu.  If you do not have a Data Analysis item, you will need to install the Data Analysis tools.  Search Help for “Data Analysis Tools” for instructions, or see the box below for a brief explanation.

`The word data is actually the plural of datum; datum refers to a single value, while data refers to a collection of values.`

To make statistical computations in Excel, you must first learn how to use functions.  A function is a formula that is predefined within Excel to accomplish a specific task.  Remember that in a table of numbers such as a spreadsheet, the lines of numbers going up and down are called columns, and the lines of numbers going side to side are called rows.  Let us say we want to do something simple like compute the average for a quiz taken by our statistics class.  We can set up an Excel sheet to do the job as follows:

`Last Modified:  06/29/2018`