The weights of a group of children are given below : \( \begin{arra...

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The weights of a group of children are given below :
\( \begin{array}{lcccc}\text { Weight (in } \mathrm{kg} \text { ) : } & 0-4 & 4-8 & 8-12 & 12-16 \\ \text { Frequency : } & 4 & 8 & 12 & 1 .\end{array} \)
Find the mean deviation from the mean.
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