Question: MLB batting average. Consider data on the annual average batting average of all Major League Baseball (MLB) teams of a given year. The data series

MLB batting average. Consider data on the annual average batting average of all Major League Baseball (MLB) teams of a given year.

The data series begins with 1960 and ends with 2013.24 MLB

(a) Make a time plot of the batting average series.

Describe any important features of the time series.

(b) Create a lag one variable and plot the batting average of a given year against its lag. Does the plot suggest the use of the lag variable as a possible predictor variable?

Explain.

(c) If your software has the option, obtain a PACF for the batting average series. What does the PACF suggest as a possible model to fit to the data?

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