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java.lang.Object umontreal.iro.lecuyer.probdist.ContinuousDistribution umontreal.iro.lecuyer.probdist.FisherFDist
public class FisherFDist
Extends the class ContinuousDistribution
for
the Fisher F distribution with n1 and n2
degrees of freedom, where n1 and n2 are positive integers.
Its density is
GammaDist
.
Field Summary |
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Fields inherited from class umontreal.iro.lecuyer.probdist.ContinuousDistribution |
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decPrec |
Constructor Summary | |
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FisherFDist(int n1,
int n2)
Constructs a Fisher F distribution with n1 and n2 degrees of freedom. |
Method Summary | |
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double |
barF(double x)
Returns the complementary distribution function. |
static double |
barF(int n1,
int n2,
double x)
Computes the complementary distribution function of the Fisher F distribution with parameters n1 and n2, evaluated at x. |
static double |
barF(int n1,
int n2,
int d,
double x)
Deprecated. |
double |
cdf(double x)
Returns the distribution function F(x). |
static double |
cdf(int n1,
int n2,
double x)
Computes the distribution function of the Fisher F distribution with parameters n1 and n2, evaluated at x. |
static double |
cdf(int n1,
int n2,
int d,
double x)
Deprecated. |
double |
density(double x)
Returns f (x), the density evaluated at x. |
static double |
density(int n1,
int n2,
double x)
Computes the density function for a Fisher F distribution with n1 and n2 degrees of freedom, evaluated at x. |
int |
getM()
Deprecated. |
double |
getMean()
Returns the mean. |
static double |
getMean(int n1,
int n2)
Computes and returns the mean E[X] = n2/(n2 - 2) of the Fisher F distribution with parameters n1 and n2 = n2. |
int |
getN()
Deprecated. |
int |
getN1()
Returns the parameter n1 of this object. |
int |
getN2()
Returns the parameter n2 of this object. |
double[] |
getParams()
Return a table containing the parameters of the current distribution. |
double |
getStandardDeviation()
Returns the standard deviation. |
static double |
getStandardDeviation(int n1,
int n2)
Computes and returns the standard deviation of the Fisher F distribution with parameters n1 and n2. |
double |
getVariance()
Returns the variance. |
static double |
getVariance(int n1,
int n2)
Computes and returns the variance of the Fisher F distribution with parameters n1 = n1 and n2 = n2. |
double |
inverseF(double u)
Returns the inverse distribution function x = F-1(u). |
static double |
inverseF(int n1,
int n2,
double u)
Computes the inverse of the Fisher F distribution with parameters n1 and n2, evaluated at u. |
static double |
inverseF(int n1,
int n2,
int d,
double u)
Deprecated. |
void |
setParams(int n1,
int n2)
Sets the parameters n1 and n2 of this object. |
String |
toString()
|
Methods inherited from class umontreal.iro.lecuyer.probdist.ContinuousDistribution |
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getXinf, getXsup, inverseBisection, inverseBrent, setXinf, setXsup |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public FisherFDist(int n1, int n2)
Method Detail |
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public double density(double x)
ContinuousDistribution
density
in class ContinuousDistribution
x
- value at which the density is evaluated
public double cdf(double x)
Distribution
x
- value at which the distribution function is evaluated
public double barF(double x)
ContinuousDistribution
barF
in interface Distribution
barF
in class ContinuousDistribution
x
- value at which the complementary distribution function is evaluated
public double inverseF(double u)
ContinuousDistribution
inverseF
in interface Distribution
inverseF
in class ContinuousDistribution
u
- value at which the inverse distribution function is evaluated
public double getMean()
ContinuousDistribution
getMean
in interface Distribution
getMean
in class ContinuousDistribution
public double getVariance()
ContinuousDistribution
getVariance
in interface Distribution
getVariance
in class ContinuousDistribution
public double getStandardDeviation()
ContinuousDistribution
getStandardDeviation
in interface Distribution
getStandardDeviation
in class ContinuousDistribution
public static double density(int n1, int n2, double x)
@Deprecated public static double cdf(int n1, int n2, int d, double x)
public static double cdf(int n1, int n2, double x)
@Deprecated public static double barF(int n1, int n2, int d, double x)
public static double barF(int n1, int n2, double x)
@Deprecated public static double inverseF(int n1, int n2, int d, double u)
public static double inverseF(int n1, int n2, double u)
public static double getMean(int n1, int n2)
public static double getVariance(int n1, int n2)
public static double getStandardDeviation(int n1, int n2)
@Deprecated public int getN()
@Deprecated public int getM()
public int getN1()
public int getN2()
public void setParams(int n1, int n2)
public double[] getParams()
public String toString()
toString
in class Object
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SSJ V. 2.6. |
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