Math, asked by pilas886, 1 year ago

Find the mean of the observation 25 27 19 21 23 25 33 28 20 and show that the sum of the deviation of the mean from the observation is zero

Answers

Answered by bhumii

1

mean
sum of all observation ÷ no of observation
= 221÷9=23 . 4
i hope my ans is correct

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