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Organisation of Data — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsOrganisation of Data4 Marks
Question
What are real class limits? How are they computed?
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Answer

The real class limits of a frequency distribution are referred to as class boundaries. In an exclusive frequency distribution, the class limits and class boundaries are one and the same, but in inclusive frequency distribution, the class boundaries are computed as below.Lower Class Boundary = $\text{Lower Class Limit -}\frac{1}{2}\text{d}$
Upper Class Boundary = $\text{Upper Class Limit +}\frac{1}{2}\text{d},$
Where d is the difference between the lower limit of a group and upper limit of the preceding group.

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