Question

sum 12 observations are 256 if one of the observation 14 is deleted, find the mean of remaining observations

Answer 1

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Given :-

Total no. of observations = 12

Sum of the observations = 256

The observation deleted = 14

Now,

No. of observation = 11

Sum of the observation = 256 - 14 = 242

To find :-

Mean of the remaining observations.

We know that,

$\mathsf{Mean = \frac{ \: Sum \: \: of \: \: the \: \: observation}{No. \: \: of \: \: observation} } \\ \\ \mathsf{ \: \: \: \: \: \: \: \: \: \: \: = \frac{242}{11} }\\ \\ \mathsf{ \: \: \: \: \: \: \: \: \: \: \: =22 }$

Mean of the remaining observations = 22