beta distribution


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beta distribution

[′bād·ə dis·trə′byü·shən]
(statistics)
The probability distribution of a random variable with density function ƒ(x) = [x α-1(1-x)β-1]/ B (α,β), where B represents the beta function, α and β are positive real numbers, and 0<x<1. Also known as Pearson Type I distribution.
References in periodicals archive ?
Their topics include dilations and free spectrahedral inclusions, the optimality condition a = P in terms of beta functions, reformulation of the optimization problem, bounds on the median and the equipoint of the beta distribution, and dilations and inclusions of balls.
In this case, given that the relative air humidity is a random variable with values given in the open interval (0, 1), we could assume a beta distribution to analyze the data.
Haab and McConnel (1998) applied the beta distribution for modeling the WTP, but its use did not occur optimally since at the time there was no fully developed model that associated the mean response with the explanatory variables of the phenomenon being studied.
5.1.7] that this minimax estimator is indeed a Bayes estimator with respect to a continuous distribution supported in [0,1], namely the Beta distribution
It is expected that there will be many applications of the new extension of the classical beta function, e.g., new extension of the beta distribution, new extensions of Gauss hypergeometric functions and confluent hypergeometric function, generating relations, and extension of Riemann-Liouville derivatives.
The fundamental assumption in this analysis is that the clearance is represented with a beta distribution [8][9].
Beta distribution conforming to the binomial distribution has the property of the conjugate prior.
and a physician's true performance is assumed to come from a beta distribution:
In the second step, LRT comparison was made with a null model M7, assuming a beta distribution B (p, q) for x w (in the interval 0 < [omega] < 1, where 0 indicated complete constraint and 1 was the expectation under no selection pressure), and another M8 model using an additional class of sites with w estimated was included.
This provides researchers with more flexibility to test different types of distributions (e.g., Normal vs Beta distribution), or the same distribution with different parameters (e.g., same Normal distribution with different mean settings) to find the most appropriate distribution for imputation.
Assuming the beta distribution characterized the distribution of pain responses, beta regression models, an extension of generalized linear models, were estimated associating pain with demographic and exposure variables.