The sum of 100 observations and the sum ...

The sum of 100 observations and the sum of their sequares are 400 and 2475 (respectively Later on, three observations 3,4 and 5 were found to be incorrect if the incorrect observations are omitted, then the variance of the remaining observations

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The sum of 100 observations and the sum of their sequares are 400 and 2475 (respectively Later on, three observations 3,4 and 5 were found to be incorrect if the incorrect observations are omitted, then the variance of the remaining observations

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