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Let m be the mid-point and l be the uppe...

Let m be the mid-point and l be the upper class limit of a class in a continuous frequency ditribution. The lower class limit of the class is :

A

2m+l

B

2m-l

C

m-l

D

m-2l

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MODERN PUBLICATION-STATISTICS-EXERCISE
  1. In a frequency distribution, the mid value of a class is 10 and width ...

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  2. The width of each of five continuous classes in a frequency distibutio...

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  3. Let m be the mid-point and l be the upper class limit of a class in a ...

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  4. The class marks of a frequency distribution are given as follows : 15,...

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  5. In the class intervals 10-20, 20-30, the number 20 is included in.

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  6. A grouped frequency table with class intervals of equal sizes using 25...

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  7. A grouped frequency distribution table with classes of equal sizes usi...

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  8. To draw a histogram to represent the following frequency distribution ...

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  9. The mean of five numbers is 30. If one number is excluded, their mean ...

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  10. If the mean of the observations : x, x + 3, x + 5, x + 7, x + 10 is 9,...

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  11. If barx represents the mean of n observations x1, x2,…….,xn , then val...

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  12. If each observation of the data is increased by 5, then their mean

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

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

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

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

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

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

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

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  20. 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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