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Consider a finite sequence of random values X = { x1, x2,..., xn}. Let μx be the mean and σx be the standard deviation of X. Let another finite sequence Y of equal length be derived from this as yi = a*xi + b, where a and b are positive constants. Let μy be the mean and σy be the standard deviation of this sequence. Which one of the following statements is INCORRECT?

A

Index position of mode of X in X is the same as the index position of mode of Y in Y.

B

Index position of median of X in X is the same as the index position of median of Y in Y.

C

μy = aμx+b

D

σy = aσx+b

asked in Probability by gate

1 Answer

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D

σy = aσx+b

answered by gate

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