Statistics : Discrete

Study concepts, example questions & explanations for Statistics

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Example Questions

Example Question #1 : Random Variables

Which of the following variables is considered to be a discrete random variable?

Possible Answers:

Number of students in a classroom

Tensions on a strings supporting differing weights

Heights of a group of trees

Weights of a sample of oranges

Light absorbance of water samples

Correct answer:

Number of students in a classroom


A random variable can be described as the numerical value of the outcome of a particular phenomena. There are two general types of random variables: discrete and continuous. A discrete random variable is a variable whose value is determined through counting. On the other hand, continuous random variables are derived through measurements and calculations; therefore the correct answer is "number of students in a classroom."

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