Question

the mean of 10 observations is 3.5. if two observations namely 3.5 and 2.5 at deleted. find the new mean ​

Answer 1

Hii dear

Mean of 10 observation = 3.5

So , total value of 10 observation =

3.5 × 10 = 35

Now , value of 2 observation deleted = 3.5 + 2.5 = 6

Therefore , new mean = mean of 8 observation = 35 - 68 = 3.625

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