Calculate the median if l=74.5 h=5 f=12 c.f =15 n÷2=18
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median =L +[ n÷2-cf/ f] ×h
=74.5+[18-15÷12]×5
=74.5+3÷12×5
=75.75
=74.5+[18-15÷12]×5
=74.5+3÷12×5
=75.75
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