What is the population standard deviation of the values 4, 6, 8 and 10?
Correct answer: B. Square root of 5
- A. 2
- B. Square root of 5
- C. 3
- D. Square root of 10
Explanation
The mean is 7, and the squared deviations are 9, 1, 1 and 9. Their population average is 5, so the population standard deviation is the square root of 5.
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