mean the mean of 10 observations is 16.3 by an error one observation is registered as 32 instead of 23.find the correct mean
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Mean=16. 3
Observations =10
Incorrect observation=32
Correct observation=23
ATQ
The sum of the observations =mean×no.of observations
=16. 3×10
=163
Now, subtract 32from 163 and then add23
=(163-32)+23
131+23
=154
Then divide it by 10
154 /10
= 15. 4
The answer is 15. 4 this is the correct mean
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