the mean of 40observations was 1160 it was detected on rechecking that the value of 165 was wrongly copied as 125 for computation of mean find the correct mean
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x1 + ... + x39 + 125 = 1160
_____________
40
x1 + ... + x39 + 125 = 46400
Adding 40 on both sides,
x1 + ... + x39 + 165 = 46440
Dividing by 40,
x1 + ... + x39 + 165 = 1161
______________
40
So, correct mean is 1161
Hope this helps... plsss make it the brainliest
_____________
40
x1 + ... + x39 + 125 = 46400
Adding 40 on both sides,
x1 + ... + x39 + 165 = 46440
Dividing by 40,
x1 + ... + x39 + 165 = 1161
______________
40
So, correct mean is 1161
Hope this helps... plsss make it the brainliest
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