Two golfers recorded their scores for 20 nine-hole rounds of golf. Golfer A's scores were
39, 39, 40, 40, 40, 40, 40, 40, 41, 41, 41, 41, 41, 41, 41, 42, 43, 43, 43, 44
Golfer B's scores were
40, 40, 40, 41, 41, 41, 41, 42, 42, 42, 42, 42, 43, 43, 43, 43, 43, 43, 44, 44
(a) Compute the sample mean and the variance of each golfer's scores.
(b) Who is the better golfer? Note: The lower the score is, the better.
(c) Who is the more consistent golfer?