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bgeopdf

02 Oct 2009 (Updated 02 Oct 2009)

Beta-geometric probability distribution function.

File Information
Description	This m-function returns the beta-geometric probability density function with parameters A and B at the values in X. Note: The density function is zero unless A and B are integers. The Beta-geometric distribution is used to model the number of failures that will occur in a binomial proccess before the first success is observed and where the binomial p is itself a random variable taking a Beta(a,b) distribution. It has been broadly applied in fecundability and manpower or contractual studies. It has the probability density function: B(a+x, b+1) p(x) = -------------- B(a, b) where B(a,b) is a beta function. Syntax: function y = bgeopdf(x,a,b) Inputs: x - number of failures before the first success {0,1,2,...) a - alpha parameter of Beta function (>0) b - beta parameter of Beta function (>0) Output: y - beta-geometric probability value
Required Products	Statistics Toolbox
MATLAB release	MATLAB 7 (R14)
Zip File Content
Other Files	bgeopdf.m, license.txt

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Everyone's Tags	betageometric, discrete, pdf, probability, probability density function
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Updates
02 Oct 2009	It was added an appropriate format to cite this file.

Tag Activity for this File
Tag	Applied By	Date/Time
betageometric	Antonio Trujillo-Ortiz	02 Oct 2009 11:41:08
discrete	Antonio Trujillo-Ortiz	02 Oct 2009 11:41:08
pdf	Antonio Trujillo-Ortiz	02 Oct 2009 11:41:08
probability	Antonio Trujillo-Ortiz	02 Oct 2009 11:41:08
probability density function	Antonio Trujillo-Ortiz	02 Oct 2009 11:41:08

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