Next, have Excel run the regression on the two columns of return data you generated. Under the Data menu, the Data Analysis button allows you to select Regression.

Next, have Excel run the regression on the two columns of return data you generated. Under the Data menu, the Data Analysis button allows you to select Regression.

This is precisely where a regression analysis can help figure this out. Also, just looking at the relationship between ad spend and revenue is usually not insightful enough to actually draw any ...