Suppose you have a set of data and want to make a grouped frequency distribution

Question

Suppose you have a set of data and want to make a grouped frequency distribution table. If the minimum value in the set of data is 25, the maximum value in the set of data is 68, and you want 7 classes, what should the class width be? Suppose you have a set of data and want to make a grouped frequency distribution. If the minimum value in the set of data is 29, the class width is 7, and you the lower class limit of the fourth class be? If the class of one-class of a grouped frequency distribution are 46-69 what is the upper class boundary?

Explanation / Answer

minimum is 25

maximum is 68

so the range is 68-25 =43

since we want 7 classes, the width of each class should be 43/7 =6.14 i.e 7 width

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