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The class-mark and class-length of a cla...

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

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The correct Answer is:
upper boundary=27,lower boundary=17
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Knowledge Check

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

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

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