During the early part of the 1994 baseball season, many sports fans and baseball players noticed that the number of home runs being hit seemed to be unusually large. Below are separate stemplots for the number of home runs by American League and National League teams based on the team-by-team statistics on home runs hit through Friday, June 3, 1994 (from the Columbus Dispatch, Sunday, June 5, 1994). They are given as separate stemplots for the number of home runs by American and National League teams. American League

2
3 5
4 0 3 9
5 1 4 7 8 8
6 4 8 8
7 5 7

National League

2 9
3 1
4 2 6 7 8 8
5 3 5 5 5
6 3 3 7
7

Required:
a. Find the median for the number of home runs hit through Friday, June 3, 1994 for the American League teams. Explain.
b. Find the mean of the number of home runs hit through Friday, June 3, 1994 by National League teams. Explain.