1)Open a blank EXCEL spreadsheet, then click on the following:

2)Click "File"

3)Click "Options" (lower left)

4)Click "Add-Ins" (on left)

5)Click "Analysis ToolPak-VBA"

6)Click "Go" (near the bottom)

7)Click "Analysis ToolPak-VBA" (in window)

8)Click "Ok"

9)Terminate EXCEL then restart it

10)Click on "Data" tab.

11)Under data tab, there is a "Data Analysis" tab on the right.Click on it.

12)"Regression" is one of the pull down options; click on it.

13)Once the regression window opens, specify where the "Y" data is, where "X" data is.If you have multiple X variables, place the data in columns next to one another and highlight all the rows and columns that have X data. EXCEL will interpret each column of data as a different independent variable.Lastly, specify where in the spreadsheet you want the output to be displayed then click on "Ok".