The mean of 10 observations is 16.5. It was later noticed that one
observation was taken as 57 instead of 75 by mistake. Then find the
correct mean of the data.
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Answer:
18.3
Step-by-step explanation:
n=10
mean=sigmax/n
16.5=sigmax/10
165=sigmax
mean=165+75-57
=165+18
=183
Actual mean=183/10
=18.3
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