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16 package org.apache.commons.math.stat.descriptive;
17
18 import junit.framework.TestCase;
19
20 /**
21 * Test cases for the {@link UnivariateStatistic} class.
22 * @version $Revision: 155427 $ $Date: 2005-02-26 06:11:52 -0700 (Sat, 26 Feb 2005) $
23 */
24 public abstract class UnivariateStatisticAbstractTest extends TestCase {
25
26 protected double mean = 12.404545454545455d;
27 protected double geoMean = 12.070589161633011d;
28
29 protected double var = 10.00235930735931d;
30 protected double std = Math.sqrt(var);
31 protected double skew = 1.437423729196190d;
32 protected double kurt = 2.377191264804700d;
33
34 protected double min = 8.2d;
35 protected double max = 21d;
36 protected double median = 12d;
37 protected double percentile5 = 8.29d;
38 protected double percentile95 = 20.82d;
39
40 protected double product = 628096400563833396009676.9200400128d;
41 protected double sumLog = 54.7969806116451507d;
42 protected double sumSq = 3595.250d;
43 protected double sum = 272.90d;
44 protected double secondMoment = 210.04954545454547d;
45 protected double thirdMoment = 868.0906859504136;
46 protected double fourthMoment = 9244.080993773481;
47
48 protected double tolerance = 10E-12;
49
50 protected double[] testArray =
51 {12.5, 12, 11.8, 14.2, 14.9, 14.5, 21, 8.2, 10.3, 11.3,
52 14.1, 9.9, 12.2, 12, 12.1, 11, 19.8, 11, 10, 8.8,
53 9, 12.3 };
54
55 public UnivariateStatisticAbstractTest(String name) {
56 super(name);
57 }
58
59 public abstract UnivariateStatistic getUnivariateStatistic();
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61 public abstract double expectedValue();
62
63 public double getTolerance() {
64 return tolerance;
65 }
66
67 public void testEvaluation() throws Exception {
68 assertEquals(
69 expectedValue(),
70 getUnivariateStatistic().evaluate(testArray),
71 getTolerance());
72 }
73
74 }