the mean of 40 observations was 160.It was detected that the value of 165 was wrongly copied as 125.Find the correct mean ?
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Answered by
7
sum of observation= 40*160
=6400
Correct Sum of observation= 6400-125+165
=6440
Correct Mean = 6440/40
=161
=6400
Correct Sum of observation= 6400-125+165
=6440
Correct Mean = 6440/40
=161
Answered by
2
mean = 160
sum of observations=160*40=6400
correct sum=6400-125+165=6440
new mean=6440/40=161
hope it helps
mark the BRAINLIEST plzz
sum of observations=160*40=6400
correct sum=6400-125+165=6440
new mean=6440/40=161
hope it helps
mark the BRAINLIEST plzz
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