The mean marks of 100 students was found to be 40 if by mistake the tabular took 08, 29 and 18 instead of correct marks 88 92 8I find the correct mean
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mean = 40
sigma x = 100×40
= 4000 (wrong )
correct mean
= (wrong sigma x + correct - incorrect ) /N
=( 4000 + 88+92+81 - 8 - 29 - 18 ) / 100
= 4206 / 100
correct mean = 42.06
PLEASE SELECT MY ANSWERS AS BRAINLIEST
sigma x = 100×40
= 4000 (wrong )
correct mean
= (wrong sigma x + correct - incorrect ) /N
=( 4000 + 88+92+81 - 8 - 29 - 18 ) / 100
= 4206 / 100
correct mean = 42.06
PLEASE SELECT MY ANSWERS AS BRAINLIEST
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