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MCQ
The variance of the data 3, 5, 7, 9, 11 is:
Unit-11 Basic Statistics
A 6
B 8
C 10
D 12
Explanation

Mean = 7; sum of squared deviations = 16 + 4 + 0 + 4 + 16 = 40; variance = 40/5 = 8.

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