Math, asked by chandrakundu14, 4 months ago

The mean of 25 observations is 27. If one observation is included, the mean still remains
27. Find the included observation.

Answers

Answered by Vamshijupelli
0

Answer:

27

Step-by-step explanation:

Mean = Sum / number of values

So, existing sum = 25*27 = 675

New mean = 27 = (675 + new value) / 26

675 + new value = 27*26

675 + new value = 702

new value = 27

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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