1.

If the mean and standard deviation of 75 observations is 40 and 8 respectively, find the new mean and standard deviation if (i) Each observation is multiplied by 5. (ii) 7 is added to each observation.

Answer»

If the mean and standard deviation of 75 observations is 40 and 8 respectively, find the new mean and standard deviation if

(i) Each observation is multiplied by 5.

(ii) 7 is added to each observation.



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