alleryStart learning →What is the variance of the data 2, 4, 4, 4, 5, 5, 7, 9?
A5
B4
C3
D2
Answer & Solution
Correct answer: B. 4
The mean is 5 and the squared deviations are 9, 1, 1, 1, 0, 0, 4, 16, which total 32; dividing by 8 gives 4.
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