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Define: class-interval...

Define:
class-interval

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Define: class-length

Given that the cumulative frequencies of less than type and more than type corresponding to a class interval are 320 and 323 respectively, when the total frequency is 500, find the percentage of the class-interval.

Knowledge Check

  • The mid-value of a class-interval of a frequency distribution is x and its lower -boundary is y. Then its upper -boundary=

    A
    2x
    B
    `2y-x`
    C
    `2x+y`
    D
    `2x-y`

  • The mid-value of a class-interval of a frequency distribution is 10 and the class-length of each class is 6, The lower class limit of the class-interval is

    A
    6
    B
    7
    C
    8
    D
    12

  • The class-length of the class-intervals 1-4,5-8,………is

    A
    3
    B
    4
    C
    2
    D
    `3-5`

    • Similar Questions

    Explore conceptually related problems

    The mid-value of a class-interval of a continuous frequency distribution is 42 and its class-length is 10.Find the lower and upper class-limits of the class-intervals.

    The class-mark and class-length of a class-interval are 22 and 10 respectively.Find its lower and upper class-boundaries.

    What do you mean by class-frequency ? What is relative class-frequency of any class-interval?

    Determine the third class-interval of the classes 10-19,20-29,……………and find its lower and upper class-boundaries.

    The mid-values of the class-intervals of a frequency distribution are respectively 11,14,17,20…… The class interval of which the mid-value is 17 is

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