A data set consists of 83 observations. how many classes would you recommend for a frequency distribution?

solution:

First determine number of classes using 2 to the k rule

2⁶ = 64

64 is less than 83,

So,

6 classes is not enouth.

Try the next highest number = 2⁷ = 128

128 is greater then 83

So,

The recommended number of classes is 7.