public final class ChiSqrDistribution extends ProbabilityDistribution
Constructor and Description |
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ChiSqrDistribution(double dgr)
Constructs a chi-squared distribution.
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Modifier and Type | Method and Description |
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double |
cumulative(double X)
Cumulative chi-squared distribution function.
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double |
getDegreesOfFreedom()
Returns the degrees of freedom.
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double |
inverse(double probability)
Inverse of the cumulative chi-squared distribution function.
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double |
probability(double X)
Probability density function of a chi-squared distribution.
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checkRange, checkRange, findRoot
public ChiSqrDistribution(double dgr)
dgr
- degrees of freedom.public double getDegreesOfFreedom()
public double probability(double X)
probability
in class ProbabilityDistribution
public double cumulative(double X)
cumulative
in class ProbabilityDistribution
public double inverse(double probability)
inverse
in class ProbabilityDistribution