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There are 50 numbers. Each number is sub...

There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be -3.5. The mean of the given number is:

A

46.5

B

49.5

C

53.5

D

56.5

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MBD-STATISTICS-EXERCISE
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  10. If each observation of the data is increased by 5, then their mean

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  11. Let barx be the mean of x1,x2,……,xn and bary the mean of y1,y2……,yn ba...

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

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  14. The mean of 100 observations is 50. If one of the observations which w...

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  15. There are 50 numbers. Each number is subtracted from 53 and the mean o...

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

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

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

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

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

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