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

The following information relates to a sample of size 60: $\sum x^2 =18000, \sum x =960$ The variance is

$\begin{array}{1 1}(A)\; 6.63 \\(B)\;16 \\(C)\;22 \\(D)\; 44 \end{array} $

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