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Last year 75 boys and 50 girls of a scho...

Last year 75 boys and 50 girls of a school appeared in Madhyamik Examination. The average marks obtained by two groups of students was founds to be 65 and 70. Find the average marks obtained by all students.

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The correct Answer is:
Therefore, the average marks obtained by all students is 67.
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CHHAYA PUBLICATION-Measures of Central Tendency -Exercise 2 C Very short answer type question
  1. Last year 75 boys and 50 girls of a school appeared in Madhyamik Exami...

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  2. Find the mode of the following numbers : 5,3,2,7,5,3,8,5

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  3. Find the mode of the following numbers : 4,3,2,5,4,5,3,7,3,2,6

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  4. Find the mode of the following numbers : 7,4,10,15,7,3,5,2,9,12

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  5. If the mode and median of a frequency distribution are 31 and 37 respe...

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  6. If the mean and median of a frequency distribution are 35 and 33 respe...

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  7. If the mode and A.M. are Rs. 12.30 and Rs. 18.48 respectively find the...

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  8. IF y=2x-11 , the medin and the mode of x are 30 and 28 respectively, f...

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  9. If 2y-6x=6 and the mode of x is 21, find the mode of y.

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  10. The values of two variables x and y re : find the mean and median...

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  11. The dialy wages of 30 orkers are given below : Form the folowing ...

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  12. The frequency distribution of the daily rainfall of a town in the last...

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  13. Find the mode for the following frequency distribution

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  14. Find mode for the following distribution.

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  15. Find the mode for the following frequency distribution

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  16. Marks obtained by 25 students given below : Find (i) arithmetic m...

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  17. Daily wages of a group of workers given below : Find (i) A.M., (i...

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  18. Find the A.M. A.M and median of the following frequency distribution a...

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  19. From the following data find (i) mean (ii) median (iii) mode.

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