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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 `sum(x_(i))^2=18000` and `sumx_(i)=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"=(Sigmax_(i)^(2))/n-((Sigmax_(i))/n)^(2)`
`=(18000)/6-((960)/(60))^(2)=300-256=44`
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