# Which of the following is a valid probability distribution?

Monday, April 11, 2022
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**Question: Which of the following is a valid probability distribution?**

A discrete probability distribution lists each possible value that a random variable can take along with its probability. A valid probability distribution for a discrete random variable is the one whose sum of probabilities is one. The random variable must take on some value in the set of possible values with probability one so we require that px must sum to one.

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