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Home  >>  JEEMAIN and AIPMT  >>  Mathematics  >>  Class11  >>  Statistics
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If a student gets marks : English 80, Hindi 70, Mathematics 85, Physics 75 and Chemistry 67 and the weights of subjects are 1,2,1,3,1 respectively then weighted A.M is

$\begin {array} {1 1} (A)\;74.625 & \quad (B)\;75.625 \\ (C)\;73.625 & \quad (D)\;None \: of \: these \end {array}$

 

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1 Answer

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Weighted A.M = $ \large\frac{1 \times 80 + 2 \times 70 + 1 \times 85 + 3 \times 75 + 1 \times 67}{1+2+1+3+1}$
$ = \large\frac{80+140+85+225+67}{8}$
$ = \large\frac{597}{8}$
$ = 74.625$
Ans : (A)
answered Jan 25, 2014 by thanvigandhi_1
 

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