Consider the following statements about a particular traditional class of statistics students at State U related to discrete and continuous variables. Which of the following is a true statement? Check all that apply.

(A) The number of students in the class is a discrete variable.

(B) The average age of the students in the class is a continuous variable.

(C) The room number of the class is a continuous variable.

(D) The average weight of the students is a discrete variable.

(E) A student's GPA is a continuous variable.

The answers are A, B and E

A. The number of students in the class is a discrete variable.

B. The average age of the students in the class is a continuous variable.

E. A student's GPA is a continuous variable.

Explanation:

A variable is any characteristics, number, or quantity that can be measured or counted. There are two types of variables;

Discrete variables in which the values can be obtained by counting and assume independent values. For example: Shoe size (38, 39, 45), dress size (6, 8, 10), number of students (50, 42, 20) Continuous variables which are random variables that measure something and assume any value in a given range or infinite continuum. They are not defined at specific values and can take any value between two specified numbers. Fro example: A student's GPA (4.21, 3.52 ...).