The file souvenirSales.xls contains monthly sales for a souvenir shop at a beach resort town in Queensland, Australia, between 1995 and 2001. Back in 2001, the store wanted to use the data to forecast sales for the next 12 months (year 2002). They hired an analyst to generate forecasts. The analyst first partitioned the data into training and validation periods, with the validation period containing the last 12 months of data (year 2001). She then fit a regression model to sales, using the training period. a. Create a well-formatted time plot of the data b. Change the scale of the x axis, y axis, or both to logarithmic scale in order to achieve a linear relationship. Select the time plot that seems most linear.

Predictive Analytics