solve plz with formula in detail.....
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first we can find c.f table and then we find l, n÷2 , c.f , f , h and then apply the formula of median
median= l+{n÷2–c.f÷f}h
350+{20.5–15÷7}50
350+{4.5÷7}50
=383.75 approxx
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