Question

The mean of 100 observatios is 50. if one of the observation which was 50 is replaced 150 then what will be the resulting mean??​

Answer 1

Answer:

Now, the observation 50 is replaced by 150, then Eq. ( i) becomes, 100Σi=1xi=5000-50+150=5100. ∴ Resulting mean =100Σi=1xi100=5100100=51. Hence, the resulting mean is 51.24

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Answer 2

Now, the observation 50 is replaced by 150, then Eq. ( i) becomes, 100Σi=1xi=5000-50+150=5100. ∴ Resulting mean =100Σi=1xi100=5100100=51. Hence, the resulting mean is 51.