(3) Mean and S.D of 10 observations are 8 & 1.5. If 3 is added and result is multiplied by 2,
find the
mean and S.D

By Remi

(3) Mean and S.D of 10 observations are 8 & 1.5. If 3 is added and result is multiplied by 2,
find the
mean and S.D of new variable. OR
(3) For a frequency distribution 3Q3=8Q1,=4M=120. Then find skewness and its coefficient.​

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Remi

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