the mean of 20 observation is 17 if one of the observation is 42 replaced by 24 find the new mean
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he question is : Mean of 20 observations is 17. If in the observations, observation 42 is replaced by 24, find the new mean.
:
Find the sum of the other 19 observations
(n+40)/20 = 17
multiply both sides by 20
n + 40 = 340
n = 340 - 40
n = 300
observation 42 is replaced by 24
m=300+24/20
m=324/20
m=16.2
therefore 16.2 is ur new mean
I hope it helps you!!!
please mark my answer as a brainalist
:
Find the sum of the other 19 observations
(n+40)/20 = 17
multiply both sides by 20
n + 40 = 340
n = 340 - 40
n = 300
observation 42 is replaced by 24
m=300+24/20
m=324/20
m=16.2
therefore 16.2 is ur new mean
I hope it helps you!!!
please mark my answer as a brainalist
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