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If for a sample of size 60, we have the ...

If for a sample of size 60, we have the following information `sumxi^2=18000a n dsumxi=960` , then the variance is

A

6.63

B

16

C

22

D

44

Text Solution

Verified by Experts

The correct Answer is:
D
Variance `=(sum x_(i)^(2))/(n)-((sum x_(i))/(n))^(2)`
`=(18000)/(60)-((960)/(60))^(2)=300-256=44`
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