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The standard deviation of a variate x is...

The standard deviation of a variate x is `sigma`. The standard deviation of the variable `(ax + b)/c, a, b,c` are constants, is:

A

`(a/c) sigma`

B

`|a/c|sigma`

C

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

D

None

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The correct Answer is:
B
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