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What is marginal probability function?

Updated: 4/28/2022
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10y ago

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If f(x, y) is the joint probability distribution function of two random variables, X and Y, then the sum (or integral) of f(x, y) over all possible values of y is the marginal probability function of x.

The definition can be extended analogously to joint and marginal distribution functions of more than 2 variables.

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Q: What is marginal probability function?
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