001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.math.stat.descriptive.moment; 018 019 import org.apache.commons.math.stat.descriptive.StorelessUnivariateStatisticAbstractTest; 020 import org.apache.commons.math.stat.descriptive.UnivariateStatistic; 021 022 /** 023 * Test cases for the {@link SecondMoment} class. 024 * @version $Revision: 762087 $ $Date: 2009-04-05 10:20:18 -0400 (Sun, 05 Apr 2009) $ 025 */ 026 public class SecondMomentTest extends StorelessUnivariateStatisticAbstractTest { 027 028 /** descriptive statistic. */ 029 protected SecondMoment stat; 030 031 /** 032 * @param name 033 */ 034 public SecondMomentTest(String name) { 035 super(name); 036 } 037 038 /** 039 * @see org.apache.commons.math.stat.descriptive.UnivariateStatisticAbstractTest#getUnivariateStatistic() 040 */ 041 @Override 042 public UnivariateStatistic getUnivariateStatistic() { 043 return new SecondMoment(); 044 } 045 046 /** 047 * @see org.apache.commons.math.stat.descriptive.UnivariateStatisticAbstractTest#expectedValue() 048 */ 049 @Override 050 public double expectedValue() { 051 return this.secondMoment; 052 } 053 054 }