Practice problem

The first question asks specifically to compare Thursday's to Sunday's scores, Day 1 vs. Day 4 of a PGA tournament.

The second question asks to compare against each other the scores across the four days of a PGA tournament.

The third question expects you to split the data set into two groups, using the age of the professional golfers as a criterion, as stated in the case. If you are unclear on how to split the data set, make a guess.

There is also an additional question that can be summarized as follows:

• Is the players' age uniformly distributed across the field?