Use the tbats() function to model your retail time series. a. Check the residuals and produce forecasts. b. Does this completely automated approach work for these data? c. Have you saved any degrees...

Use the tbats() function to model your retail time series.

a. Check the residuals and produce forecasts.

b. Does this completely automated approach work for these data?

c. Have you saved any degrees of freedom by using Fourier terms rather than seasonal dierencing?