1 /* 2 * Copyright 2003-2004 The Apache Software Foundation. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.apache.commons.math.stat.descriptive.moment; 17 18 import org.apache.commons.math.stat.descriptive.StorelessUnivariateStatisticAbstractTest; 19 import org.apache.commons.math.stat.descriptive.UnivariateStatistic; 20 21 /** 22 * Test cases for the {@link SecondMoment} class. 23 * @version $Revision: 155427 $ $Date: 2005-02-26 06:11:52 -0700 (Sat, 26 Feb 2005) $ 24 */ 25 public class SecondMomentTest extends StorelessUnivariateStatisticAbstractTest { 26 27 /** descriptive statistic. */ 28 protected SecondMoment stat; 29 30 /** 31 * @param name 32 */ 33 public SecondMomentTest(String name) { 34 super(name); 35 } 36 37 /** 38 * @see org.apache.commons.math.stat.descriptive.UnivariateStatisticAbstractTest#getUnivariateStatistic() 39 */ 40 public UnivariateStatistic getUnivariateStatistic() { 41 return new SecondMoment(); 42 } 43 44 /** 45 * @see org.apache.commons.math.stat.descriptive.UnivariateStatisticAbstractTest#expectedValue() 46 */ 47 public double expectedValue() { 48 return this.secondMoment; 49 } 50 51 }