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The mean of 100 observations is 50. If one of the observation which was 50 is replaced by 150 then what will be the resulting mean?

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Average gets increased by 1.
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51
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Observed value diff =100 Mean of observed diff=100/100(no of observation)=1 So new mean =51
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Economics Professor

The total mean of 100 observations = 100X50 = 5000 Add correct obs and minus wrong obs from total i.e. 5000-50+150= 5100 new mean= 5100/50= 102
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Mean of 100 observation=50 So total sum =50×100=5000 Now one observation is replaced having value 50 by 150 So change in sum=150-50=100 Therefore change in sum=100 So new sum is 5100 Therefore new mean is 5100/100=51
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Hi, I am Deepak, form Navy nagar, Mumbai. I want to teach math and science to class viii,viii,ix and x (english or hindi medium) both online or offline. can I get some student in Colaba?

Yes buddy definitely you will get students . For that you need to be quite patient and you need to have a look at the urban pro account frequently everyday because this is a compitative world someone else might get hired if you are not active .
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