org.apache.commons.math.distribution
Class AbstractDistribution
java.lang.Object
org.apache.commons.math.distribution.AbstractDistribution
- All Implemented Interfaces:
- Serializable, Distribution
- Direct Known Subclasses:
- AbstractContinuousDistribution, AbstractIntegerDistribution
public abstract class AbstractDistribution
- extends Object
- implements Distribution, Serializable
Base class for probability distributions.
- Version:
- $Revision: 772119 $ $Date: 2009-05-06 05:43:28 -0400 (Wed, 06 May 2009) $
- See Also:
- Serialized Form
Method Summary |
double |
cumulativeProbability(double x0,
double x1)
For a random variable X whose values are distributed according
to this distribution, this method returns P(x0 ≤ X ≤ x1). |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
AbstractDistribution
protected AbstractDistribution()
- Default constructor.
cumulativeProbability
public double cumulativeProbability(double x0,
double x1)
throws MathException
- For a random variable X whose values are distributed according
to this distribution, this method returns P(x0 ≤ X ≤ x1).
The default implementation uses the identity
P(x0 ≤ X ≤ x1) = P(X ≤ x1) - P(X ≤ x0)
- Specified by:
cumulativeProbability
in interface Distribution
- Parameters:
x0
- the (inclusive) lower boundx1
- the (inclusive) upper bound
- Returns:
- the probability that a random variable with this distribution
will take a value between
x0
and x1
,
including the endpoints.
- Throws:
MathException
- if the cumulative probability can not be
computed due to convergence or other numerical errors.
IllegalArgumentException
- if x0 > x1
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