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Questions  >>  CBSE XI  >>  Math  >>  Statistics
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Q)

Mean and standard deviation of 100 items are 50 and 4 , respectively . find the sum of all items and sum of the squares of the items.

$\begin{array}{1 1}(A)\;1122\\(B)\;251600\\(C)\;79087\\(D)\;15345\end{array} $

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