6,328 results for distribut

mathworld.wolfram.com/NormalDistribution.html

Normal Distribution -- from Wolfram MathWorld

A normal distribution in a variate X with mean mu and variance sigma^2 is a statistic distribution with probability density function P(x)=1/(sigmasqrt(2pi))e^(-(x-mu)^2/(2sigma^2)) (1) on the domain x in (-infty,infty). While statisticians and mathematicians u…

mathworld.wolfram.com/DistributionFunction.html

Distribution Function -- from Wolfram MathWorld

The distribution function D(x), also called the cumulative distribution function (CDF) or cumulative frequency function, describes the probability that a variate X takes on a value less than or equal to a number x. The distribution function is sometimes also d…

doi.org/10.1214%2Faoms%2F1177728796

A Property of the Normal Distribution

The following theorem is proved. Let $X_1, X_2, \cdots, X_n$ be $n$ independently (but not necessarily identically) distributed random variables, and assume that the $n$th moment of each $X_i(i = 1, 2, \cdots, n)$ exists. The necessary and sufficient condition…

mathworld.wolfram.com/NormalDistributionFunction.html

Normal Distribution Function -- from Wolfram MathWorld

A normalized form of the cumulative normal distribution function giving the probability that a variate assumes a value in the range [0,x], Phi(x)=Q(x)=1/(sqrt(2pi))int_0^xe^(-t^2/2)dt. (1) It is related to the probability integral alpha(x)=1/(sqrt(2pi))int_(-x…

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