Catherine Falls Commercial/Getty Images Linear regression is a type of data analysis that considers ... We can chart a regression in Excel by highlighting the data and charting it as a scatter plot.

I have three values. On the X axis I want the date and time, and on the Y axis I want my reading. My data set looks like this: Code: Date Time Reading 11/30/2011 0934 212 11/30/2011 1252 272 ...