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asked in Probability by Boss (7.3k points) 9 99 253
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Mean is dependent on both scale and shift factor hence scale and change of origin as :

Mean(ax + b)   =  a . Mean(x)  + b

where a is the scale factor and b is the shift factor

Whereas standard deviation and variance depends on scale factor only.

S.D.(ax + b)  =  |a| . S.D(x)   where S.D is the standard deviation

Var(ax + b)    =  a2 Var(x)  where Var(x) is the variance

Hence the answer to the above question should be A) option as standard deviation depends on scale only.

answered by Veteran (88.6k points) 15 58 294
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