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A student obtains the following percenta...

A student obtains the following percentage in an examination.

(i) Find out simple mean marks , if all subjectes are given equal weight.
(ii) Find out weighted mean marks, if the respective weights are 1,2,1,2,3

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The correct Answer is:
(i)75% (ii) `72.22%`
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SK AGGARWALA-ARITHMETIC MEAN-Exercise ( Numerical Exercises )
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  5. Calculate (a) unweighted and (b) weighted mean price from the followi...

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  10. Frequency distribution of cost of production per unit of a good is giv...

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  11. Calculate (i) the unweighted mean of prices and (ii) the mean obtained...

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  12. A student obtains the following percentage in an examination. (i...

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  13. The mean height of 20 girls in section A of a class is 155 cm, and tha...

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  14. Gross Enrolment Ratio (GER) in classes I-V for boys and girls in the 3...

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  15. Percentage of households having access to safe drinking water in 31 St...

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  16. Find the average mark from the following :

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  17. Find the average cost of production ( in Rs per unit ) in factories i...

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  18. Calculate the average daily earnings of emplyees.

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  20. Calculate average number of marks by student in a class. Note: I...

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