What is a discrete probability distribution? What two conditions determine a probability distribution?

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2 Answers
VSH
Dec 2, 2017

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MattyMatty
Dec 2, 2017

#"A discrete pdf is a pdf of a discrete variable like the number of eyes thrown by a dice."#
#"The sum of all probabilities is 1 and the probabilities are ">=" 0."#

Explanation:

#"A discrete variable has a finite number of distinct values."#
#"Like the eyes thrown by a dice : 1,2,3,4,5, or 6."#
#"The discrete pdf for a dice throw is :"#
#"P[ X = k ] = 1/6 , k = 1,2,...,5,6."#
#"The pdf for the amount of rainfall in a month e.g. is not"#
#"discrete because there is no upper limit and the values"#
#"are continuous."#

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