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6.2: What is a Discrete Random Variable?

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    A discrete random variable is a random variable that has only discrete values. Discrete values are related to counting numbers.  

    Examples of discrete random variables

    • The number when a die is rolled. Possible values = {1, 2, 3, 4, 5, 6}
    • The number of heads when flipping two coins. Possible values = {0, 1, 2}
    • Number of Siblings you have. Possible Values = {0, 1, 2, …} Here we don’t know the maximum, but the possible values are still whole numbers.

     


    This page titled 6.2: What is a Discrete Random Variable? is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by Maurice A. Geraghty via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.