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The average marks obtained in an examina...

The average marks obtained in an examination by two groups of student was found to 75 and 85 respectively. Determine the ratio of students in the two groups, if the average mark for all students was 80.

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The correct Answer is:
`:.` The ratio of no. of students of students of two groups is 1:1
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CHHAYA PUBLICATION-Measures of Central Tendency -Exercise 2 C Very short answer type question
  1. The average marks obtained in an examination by two groups of student ...

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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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