mean of 100 observations is 50 if one of the observation which was 50 is replaced by 150 them what will ne the resulting mean
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If one of the observations which was 50 is replaced by 150 the resulting mean will be. (A) 51. ... Then we substitute the values of number of observations and mean in it and find the sum of observations. Then we subtract the value 50 and add 150 to it as 50 is replaced by 150.
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51 is write answer of your question
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