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A student obtains the following marks ( ...

A student obtains the following marks ( out of maximum of 100) in different subjects with different weights. Calculate weighted mean. Also calculate simple mean.

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Weighted A.M. `=(sumWX)/(sumW)=(635)/(8)=79.375`
Simple A.M. `=(sumX)/(N)=(385)/(5)=77 `marks .
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SK AGGARWALA-ARITHMETIC MEAN-Exercise ( Numerical Exercises )
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  2. Calculate the mean monthly rent by long method from the following :

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  3. Solve Q.1 by step deviation method.

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  4. An opinion poll was conducted by interviewing 150 people. Calculate th...

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  5. A survey of monthly incomes of 100 families living in a village was co...

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  6. Calculate average cost of cultivation per quintal of wheat from the fo...

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  7. Calculate (a) unweighted and (b) weighted mean price from the followi...

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  8. Calculate the simple arithmetic mean of the pocket money of the 8 stud...

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  9. Sachin Tendulkar scored the following runs in the World Cup Cricket 20...

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  10. Per Capita income ( at 1993-94) of India during 1991-1992 to 2001-02 i...

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  11. Given yield per hectare of food grains in India during 1995-96 and 200...

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

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

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

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

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

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

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  18. Find the average mark from the following :

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

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  20. Calculate the average daily earnings of emplyees.

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  21. Caculate the average number of days of absence by students from school...

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