1.

a candidate obtained the following percentage in an examination:English 75, mathematics 84, economic 56, geography 78, commerce 57, computer science 54, Hindi 47. It is agreed to give double weight to Mark's in English,mathematics,and geography . what is the weighted mean?

Answer»

weighted mean = (2×75+2×84+2×78+56+57+54+47)/10 = 688/10 = 68.8



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