If the variance of 3+x, 6, 4, x and 7-x is 4 and the mean
MATHEMATICS
JAMB 2013
If the variance of 3+x, 6, 4, x and 7-x is 4 and the mean is 5, find the standard deviation
- A. √3
- B. 2
- C. 3
- D. √3
Correct Answer: B. 2
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