Q13 of 174 Page 597

If each observation of a data is increased by 5, then their mean

Let the observations be x1, x2, x3.........xn


Mean = .....(i)


If each observation is increased by 5, we get,


x1 + 5, x2 + 5, x3 + 5.........xn + 5


New mean




⇒ Mean =


Thus, the mean is also increased by 5.

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