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How to find class interval?

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How to find class interval?

    • Posted by Yashu Gupta 6 years, 9 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Bhumika Patil 6 years, 9 months ago

    Let we will solve one example Consider the following data of marks obtained by 30 students :84,75,93,48,60,57,61,67,53,39,50,66,81,49,54,88,78,64,35,46,52,73,59,72,87,44,70,89,82. Range =highest mark -lowest mark 93-35=58 Class size =10 No. Of classes =range/class size =58/10=5.8=6(say) We should have 6 classes each of size 10 Classes are 35-44,45-54,55-64,65-74,75-84 and 85-94 Class intervals :each group formed above is called a class intervals.

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