what is the width for a frequency distribution with 5 classes

Question

number of unclaimed expired prizes for lottery tickets bought in a sample of states  26.7,5.7,15,2,1.4,2.1,7,14.1,0.5,12.4,7.5,31.1,1.7,1,16,18 what is the width for a frequency distribution with 5 classes

 

 

Answer 1

A common way of choosing the class width for a frequency distribution is:

 

Width = (largest number - smallest number)/(number of classes)

 

However, not everyone would agree with this.  There are times when other class widths are better.