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The mean age of combined groupd of men a...

The mean age of combined groupd of men and women is 25 years. If the mean age of men is 26 years and that of women is 21 years. then the percentage of men and women in the group is

A

Men=80%, women=20%

B

Men=70%,women=30%

C

Men=50%, women=50%

D

Men=25%, women=75%

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MODERN PUBLICATION-STATISTICS-EXERCISE
  1. The mean of the ungrouped data is given by

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  2. The mean of xi and x2 is M1 and that of x1,x2,x3,x4 is M2. Then the me...

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  3. If M and Mg represents the mean of the raw and grouped data, respectiv...

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  4. The mean of the cubes of the fist n natural number is

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  5. The mean of first 10 natural numbers is

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  6. The average age of a group of eight is same as it was 3 years ago, whe...

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  7. The arithematic mean of 6,10,x and 12 is 8. the value of x is

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  8. The mean age of combined groupd of men and women is 25 years. If the m...

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  9. If barx1,barx2,barx3,….., barxn are the means of n groups with n1,n2,…...

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  10. The mean of x1,x2 is 6 and mean of x1,x2,x3 is 7, find the value of x3

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  11. Find the median of the following data: 12,11,6,7,10,17,9,15,13

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  12. Find the missing frequency k from the following data if mean is 16.​

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  13. For the data 1,5,7,x+1,9,x-2,3 if the mean is 4, find the value of x. ...

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  14. The scores of Mathemtics test 75,69,88,95,88,64,75,95,90,88,44,59,88,6...

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  15. If a football team scored following number of goals in 1 matches, then...

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  16. The points scored by a basket ball team in a seris of matches are as f...

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  17. For what value of x the mode of the following data is 5? 1,2,5,7,5,2,5...

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  18. Find x+y+z

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  19. The mean of the following distribution is 50 find the value of a and ...

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  20. The value of C (47, 4) + underset (r=1) overset (5) sum (52-r,3) is:

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