The following data represent a sample of games won per season by the San Francisco 49ers of the National Football League over an eight-year period. 13 6 8 7 5 7 Calculate the variance of this sample. Answer: 13 169 6 36 8 64 7 49 5 25 7 49 a. 7.81 b. 7.83 c. 7.85 d. 7.87
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