Question 1Select the continuous variable. 1 pointCommute timeSize of mattress (twin, full, queen, king)Number of students living on campusNumber of pets

The continuous variable in this list is "Commute time".

Here's why:

A continuous variable is a variable that has an infinite number of possible values. In other words, any value is possible for the variable.

1. Commute time: This is a continuous variable because it can take on any value. For example, your commute time could be 15 minutes, 15.5 minutes, 15.75 minutes, and so on.

2. Size of mattress (twin, full, queen, king): This is a categorical variable, not a continuous one. The sizes are specific categories, and a mattress can't be, for example, between a twin and a full.

3. Number of students living on campus: This is a discrete variable. The number of students can only be a whole number (you can't have half a student), and there's a maximum number (the total number of students).

4. Number of pets: This is also a discrete variable for the same reasons as the number of students. You can only have a whole number of pets, and there's a maximum number (the total number of pets you have).