What is the population variance of the values 2, 4, 6 and 8?
Correct answer: B. 5
- A. 4
- B. 5
- C. 6
- D. 20
Explanation
The mean is 5, and the squared deviations are 9, 1, 1 and 9, giving a total of 20. For population variance, this total is divided by 4, so the variance is 5.
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