CMA Foundation · Fundamentals of Business Mathematics and Statistics · Statistical Representation of Data
The daily sales of a shop in Pune range from a minimum of Rs 1,200 to a maximum of Rs 4,700. If the data are to be grouped into 7 classes of equal width, what is the class width?
The class width is Rs 500. The range of the data is 4,700 minus 1,200, which equals 3,500, and dividing this range by the 7 desired classes gives a uniform width of Rs 500 for each class.
- ARs 400
- BRs 500Correct
- CRs 600
- DRs 3,500
Explanation
Range = 4,700 - 1,200 = 3,500. Class width = 3,500 / 7 = 500. Rs 3,500 is the range itself, not the width, and Rs 400 would give about 9 classes.
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