(octave.info)Distributions
26.4 Distributions
==================
Octave has functions for computing the Probability Density Function
(PDF), the Cumulative Distribution function (CDF), and the quantile (the
inverse of the CDF) for arbitrary user-defined distributions (discrete)
and for experimental data (empirical).
The following table summarizes the supported distributions (in
alphabetical order).
Distribution PDF CDF Quantile
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Univariate Discrete ‘discrete_pdf’ ‘discrete_cdf’ ‘discrete_inv’
Distribution
Empirical ‘empirical_pdf’ ‘empirical_cdf’ ‘empirical_inv’
Distribution
-- : discrete_pdf (X, V, P)
For each element of X, compute the probability density function
(PDF) at X of a univariate discrete distribution which assumes the
values in V with probabilities P.
-- : discrete_cdf (X, V, P)
For each element of X, compute the cumulative distribution function
(CDF) at X of a univariate discrete distribution which assumes the
values in V with probabilities P.
-- : discrete_inv (X, V, P)
For each element of X, compute the quantile (the inverse of the
CDF) at X of the univariate distribution which assumes the values
in V with probabilities P.
-- : empirical_pdf (X, DATA)
For each element of X, compute the probability density function
(PDF) at X of the empirical distribution obtained from the
univariate sample DATA.
-- : empirical_cdf (X, DATA)
For each element of X, compute the cumulative distribution function
(CDF) at X of the empirical distribution obtained from the
univariate sample DATA.
-- : empirical_inv (X, DATA)
For each element of X, compute the quantile (the inverse of the
CDF) at X of the empirical distribution obtained from the
univariate sample DATA.
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