# Variance and Standard Deviation

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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? Golfer A or Golfer B (the lower score is better)

(c) Who is the more consistent golfer?

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#### Solution Summary

Variances and standard deviations are used to figure out who is the better and/or more consistent golfer.

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