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Stati - Chapter 2

Maths & Stats

The mean and SD of a series is a + b, if we add 2 to each observations of the series then the sum of the mean and SD is

SHALOM T SHAJI

CA Foundation

★ 2K+

30-Nov-22 13:28

231

Answers (2)

Best Answer

Mean affects to the change of origin and scale. But standard deviation affects only to the change of scale. So if the mean + SD = a+b. And if you add 2 to each and every variables of series, then New mean + SD = a+b+2

Vijay K

CA Inter

★ 9K+

30-Nov-22 14:59

I hope that what you have said is. 1)Mean+SD = a+b 2) And not that mean = a and SD = b. Because I am little confused whether you are asking about 1 or 2

Vijay K

CA Inter

★ 9K+

30-Nov-22 15:01