Classify the following random variable according to whether it is discrete or continuous
-The peak shopping time at home improvement store is between 8:00am-11:00 am on Saturday mornings. Management at the home improvement store randomly selected 190 customers last Saturday morning and decided to observe their shopping habits. They recorded the number of items that each of the customers purchased as well as the total time the customers spent in the store. Identify the types of variables recorded by the home improvement store.
A) number of items - discrete; total time - continuous
B) number of items - continuous; total time - continuous
C) number of items - continuous; total time - discrete
D) number of items - discrete; total time - discrete

Question

Quizplus · Accepted Answer

The number of items purchased is a discrete variable because it can only take on integer values (you can't buy half an item, for example). The total time spent in the store is a continuous variable because time can be measured in infinitely divisible units (seconds, minutes, hours, etc.).

Classify the Following Random Variable According to Whether It Is