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The median of the data 78, 56, 22, 34, 4...

The median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84 is

A

45

B

49.5

C

54

D

56

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MODERN PUBLICATION-STATISTICS-EXERCISE
  1. There are 50 numbers. Each number is subtracted from 53 and the mean o...

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  2. The mean of 25 observations is 36. Out of these observationsif the mea...

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  3. The median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84 is

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  4. Median of the following numbers : 4, 4, 5, 7, 6, 7, 7, 12, 3 is

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  5. Mode of the data 15, 14, 19, 20, 14, 15, 1 6, 14, 15, 18, 14, 19, 15, ...

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  6. For drawing a frequency polygon of a continuous frequency distribution...

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  7. If the mean of x and 1/x is M, then the mean of x^2 and 1//x^2 is

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  8. The mean of the ungrouped data is given by

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

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

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

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  12. The mean of first 10 natural numbers is

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

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

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

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

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

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

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

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  20. 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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