Homework Answers
Mean number of wins = Sum of observations / Number of observations
= (10+10+8+6+6+4+5)/7
= 7
Variance = [Sum of (Deviation of an observation from mean)]2 / Number of observations
= [(10-7)2 + (10-7)2 + (8-7)2 + (6-7)2 + (6-7)2 + (4-7)2 + (5-7)2]/7
= 4.857
Standard deviation =
= 2.204
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