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Module 1: Discrete random variables

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Discrete probability distribution

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XSIQ
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Intermediate Mathematics - Discrete probability distribution

Discrete probability distribution

The discrete probability distribution of a random variable is given by its
possible values together with their probabilities.

This distribution may be displayed as a table or a graph or sometimes, as
a formula. First list all the possible values, x, that X can take. Then
calculate the associated probabilities, Pr(X = x). Remember that the total
probability = 1.

Give the probability distribution for X, the number on the face of a die
that will be uppermost after it is rolled.

Give the probability distribution for _N,_ the number of heads obtained,
when a fair coin is tossed three times.

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