Economy, asked by shruti856580, 3 months ago

The mean of 120 observations was 20. It was later found that one item was mistaken as 25 instead of 15. Find the correct mean.

Answers

Answered by pujalaxmi

15

Answer:

Mean of 20 observatios =15

Sum of 20 observations =15×20=300

Correct sum =300+8+4−3−6

=303

Correct mean= 303/20=15.15

Explanation:

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Answered by Anonymous

0

Answer:

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