Apache
/
commons-math
mirror of https://github.com/apache/commons-math.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added tests based on NIST definition. 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141129 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Phil Steitz 2004-03-13 20:03:16 +00:00
parent d29a69613e
commit 4a5d8f8a00
1 changed files with 21 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/test/org/apache/commons/math/stat/univariate/rank/PercentileTest.java
View File

@ -23,7 +23,7 @@ import org.apache.commons.math.stat.univariate.UnivariateStatisticAbstractTest;
/**
* Test cases for the {@link UnivariateStatistic} class.
* @version $Revision: 1.10 $ $Date: 2004/02/21 21:35:18 $
* @version $Revision: 1.11 $ $Date: 2004/03/13 20:03:16 $
*/
public class PercentileTest extends UnivariateStatisticAbstractTest{
@ -66,4 +66,24 @@ public class PercentileTest extends UnivariateStatisticAbstractTest{
Percentile p = new Percentile(75);
assertEquals(3.0, p.evaluate(d), 1.0e-5);
}
public void testPercentile() {
double[] d = new double[] {1, 3, 2, 4};
Percentile p = new Percentile(30);
assertEquals(1.5, p.evaluate(d), 1.0e-5);
p.setQuantile(25);
assertEquals(1.25, p.evaluate(d), 1.0e-5);
p.setQuantile(75);
assertEquals(3.75, p.evaluate(d), 1.0e-5);
p.setQuantile(50);
assertEquals(2.5, p.evaluate(d), 1.0e-5);
}
public void testNISTExample() {
double[] d = new double[] {95.1772, 95.1567, 95.1937, 95.1959,
95.1442, 95.0610, 95.1591, 95.1195, 95.1772, 95.0925, 95.1990, 95.1682
};
Percentile p = new Percentile(90);
assertEquals(95.1981, p.evaluate(d), 1.0e-4);
}
}