Question

The mean of 100 observations is 50, if one of the observations which was 50 is replaced by 150, find the resulting mean.​

Answer 1

$\underline{\underline{\huge{\pink{\tt{\textbf Answer :-}}}}}$

Mean of 100 observation =50

∴Total of 100 observation=100×50=5000

If one of the observation 50 is replaced by 150 than total of new observation is=5000−50+150=5100

Hence the mean of new 100 observation= 5100/100

=51

Answer 2

Answer:

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