Package pal.statistics
Class NormalDistribution
java.lang.Object
pal.statistics.NormalDistribution
normal distribution (pdf, cdf, quantile)
- Version:
- $Id: NormalDistribution.java,v 1.3 2001/07/13 14:39:13 korbinian Exp $
- Author:
- Korbinian Strimmer
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic double
cdf
(double x, double m, double sd) cumulative density functionstatic double
mean
(double m, double sd) meanstatic double
pdf
(double x, double m, double sd) probability density functionstatic double
quantile
(double z, double m, double sd) quantiles (=inverse cumulative density function)static double
variance
(double m, double sd) variance
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Constructor Details
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NormalDistribution
public NormalDistribution()
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Method Details
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pdf
public static double pdf(double x, double m, double sd) probability density function- Parameters:
x
- argumentm
- meansd
- standard deviation- Returns:
- pdf at x
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cdf
public static double cdf(double x, double m, double sd) cumulative density function- Parameters:
x
- argumentm
- meansd
- standard deviation- Returns:
- cdf at x
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quantile
public static double quantile(double z, double m, double sd) quantiles (=inverse cumulative density function)- Parameters:
z
- argumentm
- meansd
- standard deviation- Returns:
- icdf at z
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mean
public static double mean(double m, double sd) mean- Parameters:
m
- meansd
- standard deviation- Returns:
- mean
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variance
public static double variance(double m, double sd) variance- Parameters:
m
- meansd
- standard deviation- Returns:
- variance
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