8. Consider the number of pigs slaughtered in New South Wales (data set aus_1tuestock ). a. Produce some plots of the data in order to become familiar with it. b. Create a training set of 486 observations, withholding a test set of 7': observations {6 Tyears). c. Try using various benchmark methods to forecast the training set and compare the results on the test set. Which method did best? d. Check the residuals of 1your preferred method. Do they resemble white noise