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

Find the mean deviation about the mean for data : $x_i :5,10,15,20,25 \qquad f_i : 7,4,6,3,5$

$\begin{array}{1 1}(A)\;6.32\\(B)\;7.5\\(C)\;1.76\\(D)\;7.1\end{array} $

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