1. Install the library TSA 2. Type the command data(package=.packages(all.available=TRUE)) and make sure that you are seeing the following datasets: (i) winnebago; (ii) SP; (iii) gold; and (iv) airpass. (The one-sentence descriptions of these datasets should appear right next to the dataset's name.) 3. Plot the time series, and calculate the acf for each of the time series. Comment. 4. For each dataset, perform a transform that "stationarizes" the time series. As we have seen in class, try the log transform, differencing, and a combination. 5. Calculate the acf for the transformed time series.