Question
Asked Jan 20, 2019

When finding a class for frequency distribution, do you just pick one or is there a certain reasoning process to select one?
Also when using the class width is it a convience reason to pick a number? Or is there a certain process?

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Expert Answer

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Step 1

When finding a class for frequency distribution, do you just pick one or is there a certain reasoning process to select one?

Answer: There is no formula for selecting the number of classes but the normal procedure is that the number of classes should be between 5 and 20.

 

Step 2

For example: Suppose we have the following data:

 

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Step 3

Now let's suppose we consider 7 classes for the given data. The class widt...

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Statistics

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