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Commons Math example source code file (ChiSquaredDistribution.java)

This example Commons Math source code file (ChiSquaredDistribution.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Math tags/keywords

chisquareddistribution, chisquareddistribution, continuousdistribution, continuousdistribution, deprecated, deprecated, hasdensity, hasdensity

The Commons Math ChiSquaredDistribution.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.math.distribution;

/**
 * The Chi-Squared Distribution.
 *
 * <p>
 * References:
 * <ul>
 * <li>
 * Chi-Squared Distribution</a>
 * </ul>
 * </p>
 *
 * @version $Revision: 920852 $ $Date: 2010-03-09 07:53:44 -0500 (Tue, 09 Mar 2010) $
 */
public interface ChiSquaredDistribution extends ContinuousDistribution, HasDensity<Double> {
    /**
     * Modify the degrees of freedom.
     * @param degreesOfFreedom the new degrees of freedom.
     * @deprecated as of v2.1
     */
    @Deprecated
    void setDegreesOfFreedom(double degreesOfFreedom);

    /**
     * Access the degrees of freedom.
     * @return the degrees of freedom.
     */
    double getDegreesOfFreedom();

    /**
     * Return the probability density for a particular point.
     * @param x  The point at which the density should be computed.
     * @return  The pdf at point x.
     */
    double density(Double x);
}
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