Encyclopedia > Probability mass function

Article Content

Probability mass function

A probability function where the domain is a discrete random variable, and the range is the probability of that particular random variable occurring. For example, flip 3 coins and let X represent the number of heads. X = {0, 1, 2, 3}. The probability that X = x is (3Cx)(0.5^3)

Compare with: probability density function.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Great River, New York

... $89,566. Males have a median income of $60,179 versus $58,125 for females. The per capita income for the town is $35,509. 7.9% of the population and 6.8% of families are ...