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Question -

Explain, by taking a suitable example, how the arithmetic mean alters by (i) adding a constant k to each term, (ii) subtracting a constant k from each them, (iii) multiplying each term by a constant k and (iv) dividing each term by a non-zero constant k.



Answer -

Let x1, x2, x3, x4, x5 are five numbers whose mean is  

Hence we see that in each case, the mean is changed.

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