# Probability

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**probability curve**— Statistics. 1. a curve that describes the distribution of probability over the values of a random variable. 2. See normal curve. [1890 95] * * * …92

**probability measure**— noun A mathematical measure on a probability space that can take on values between 0 and 1, with 0 corresponding to the empty set and 1 to the entire space …93

**probability mass function**— noun A function that gives the relative probability that a discrete random variable is exactly equal to some value …94

**probability distribution**— noun A function of a discrete random variable yielding the probability that the variable will have a given value …95

**probability density**— noun probability density function …96

**probability density function**— noun Any function whose integral over a set gives the probability that a random variable has a value in that set …97

**probability paper**— noun Graph paper with vertical and horizontal rules, the latter spaced evenly and the former according to a scale that allows a plotted probability curve usually that of a normal distribution to appear linear …98

**Probability density function**— The probability function for a continuous random variable. The New York Times Financial Glossary …99

**Probability function**— A function that assigns a probability to each and every possible outcome. The New York Times Financial Glossary …100

**probability distribution**— a mathematical function that assigns to each measurable event in a sample space the probability that the event will occur …