if the mean of 25 observations is 27 and each observation is decreased by 7 , what will be the new mean?
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Answered by
31
Mean of 25 observations = 27
Sum of 25 observations = 27×25
= 675
Since, each observation is decreased by 7
=25×7
= 175
Correct sum of numbers = 675-175= 500
Correct mean = 500/25
= 20 Answer
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Sum of 25 observations = 27×25
= 675
Since, each observation is decreased by 7
=25×7
= 175
Correct sum of numbers = 675-175= 500
Correct mean = 500/25
= 20 Answer
Pls... Mark me as brainliest.....pls...
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10
this is the answer of ur question
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