Question

If S.D. of \( 0,1,2, \ldots . .9 \) is \( K \) then the S.D. of \( 10,11,12, \ldots . .19 \) is :- (A) \( K \) (B) \( K +10 \) (C) \( K +\sqrt{10} \) (D) \( 10 K \)

Answer 1

Answer: A. K

As we know that if a constant is added to all the terms, there won't be any change in variance or standard deviation.

If 10 is added to all the terms of old data we will get new data but for new data standard deviation remains same =K