For the sales-advertising data set (Advert.xlsx), use the full model, as set forth in Section 9.7.1(refer to Table 9.12),
to identify the effects of any outliers. Use indicator variables to deal with any outliers you identify. Compare your
results with those given in the text. Assess the description of the data provided by a model based on logarithms of
advertising and sales.
The link below will take you to the sales-advertising data set (Advert.xlsx)