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If s.d. of X is sigma then s.d. of the v...

If s.d. of X is `sigma` then s.d. of the variable `U=(aX+b)/(c )` where a,b,c are constants is

A

`((a)/(c)) sigma `

B

`| (a)/( c) | sigma `

C

`((a ^(2))/( c ^(2))) sigma `

D

None of these

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The correct Answer is:
B
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