Package pal.statistics
Class NormalDistribution
- java.lang.Object
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- pal.statistics.NormalDistribution
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public class NormalDistribution extends java.lang.Object
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 Constructor Description NormalDistribution()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static 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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Method Detail
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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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