Example 1.8 in Chapter 1 provided data from an experiment to identify the relationship between sales and pricing, coupon, and advertising strategies. Enter the data into a spreadsheet and implement the model in the example within your spreadsheet to estimate the sales for each of the weekly experiments. Compute the average sales for the three stores, and find the differences between the averages and the model estimates for each week. Evans, James R.. Business Analytics (2-downloads) (p. 51). Pearson Education. Kindle Edition.