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The pobability distribution of a discret...

The pobability distribution of a discrete random variable X is given below. If
`E(X^(2))=Sigma x^(2)P(X=x)`, then `6E(X^(2))-Var(X)=`
`{:(X=x,-1,0,1,2,),(P(X=x),1/3,1/6,1/6,1/3,):}`

A

`(1)/(12)`

B

`(19)/(12)`

C

`(113)/(12)`

D

`(12)/(113)`

Text Solution

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The correct Answer is:
C
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