Question

if the mean of 25 observations is 27 and each observation is devresed by 7.Find the new mean.
Statistics
Maths class 10
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Answer 1

Answer:

Let the sum of 25 observations be x

Then

25x =27

So x=27×25

Each observation is increased by 7

25

x+25(7) = 25

25(27)+25(7) = 25

25(27+7)=34.

Step-by-step explanation:

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