Math, asked by aanchal60, 1 year ago

the mean of 25 observations is 27 if one observation is included the mean still remain 27 find the included observation

Answers

Answered by Anonymous
14
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Answered by Anonymous
0

Given,

The mean of 25 observations is 27.

So,

The total sum of all the 25 observations = 27 x 25 = 675

After one observation is included,

Now the mean of 26 (25 + 1) numbers = 27

So,

The total sum of all the 26 observations = 27 x 26 = 702

Hence,

The included observation = 702 – 675 = 27

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