The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month. For 300 observations, our rule-of-thumb for number of classes would indicate 9 classes. In this case, what is the class interval and why would it be reasonable to use that class interval and only 6 classes?

Question

The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month.  For 300 observations, our rule-of-thumb for number of classes would indicate 9 classes. In this case, what is the class interval and why would it be reasonable to use that class interval and only 6 classes?

Quizplus · Accepted Answer

The Answer of The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month.  For 300 observations, our rule-of-thumb for number of classes would indicate 9 classes. In this case, what is the class interval and why would it be reasonable to use that class interval and only 6 classes?

The Following Frequency Distribution Shows the Distribution of Delivery Times