Is the number of free-throw attempts before the first shot is missed a discrete

Question

Is the number of free-throw attempts before the first shot is missed a discrete random variable, continuous random variable, or not a random variable? A. It is a secrete random variable. b. It is continuous random variable. C. It is not a random variable. b. Is the hair color of adults in the United States a discrete random variable, continuous random variable, or not a random variable? A. It is a discrete random variable. B. It is a continuous random variable. C. It is not a random variable. c. Is the height of a randomly select person a discrete random variable, continuous random variable, or not a random variable? A. It is a continuous random variable. B. It is discrete random variable. C. It is not a random variable.

Explanation / Answer

1) The answer is "A"( it is dicreate random variable)

A discrete random variable is a variable whose value is obtained by counting.

Examples:     number of students present

                                    number of red marbles in a jar

                                    number of heads when flipping three coins

                                    students’ grade level

2) the answer is "c" it is not a random variable

3) the answer is "c"(continuous random variable)

A continuous variable is a variable whose value is obtained by measuring.

Examples:     height of students in class

                        weight of students in class

                        time it takes to get to school

                        distance traveled between classes

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