68 Ranking the driving performance of professional golfers.

The Sport Journal (Winter 2007) published an article on a new method for ranking the driving performance of PGA golfers . Recall that the method incorporates a golfer’s average driving distance (yards) and driving accuracy

(percentage of drives that land in the fairway) into a driving performance index. Data on these three variables for the top 40 PGA golfers are saved in the PGADRIVER file. Determine which of the variables—driving distance, driving accuracy, and driving performance index—are approximately normally distributed.