Author: luc
Date: Sun Sep 9 11:46:38 2007
New Revision: 574049
URL: http://svn.apache.org/viewvc?rev=574049&view=rev
Log:
[MATH-160] introduced a new UnknownDistributionChisSquareTest interface
to hold the new methods without creating binary incompatibilities with
commons-math 1.1
The factories have been deprecated and do not handle this new interface
Added:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/UnknownDistributionChiSquareTest.java
(with props)
Modified:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTest.java
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTestImpl.java
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactory.java
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactoryImpl.java
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestUtils.java
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareFactoryTest.java
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareTestTest.java
Modified:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTest.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTest.java?rev=574049&r1=574048&r2=574049&view=diff
==============================================================================
---
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTest.java
(original)
+++
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTest.java
Sun Sep 9 11:46:38 2007
@@ -20,7 +20,9 @@
/**
* An interface for Chi-Square tests.
- *
+ * <p>This interface handles only known distributions. If the distribution is
+ * unknown and should be provided by a sample, then the [EMAIL PROTECTED]
UnknownDistributionChiSquareTest
+ * UnknownDistributionChiSquareTest} extended interface should be used
instead.</p>
* @version $Revision$ $Date$
*/
public interface ChiSquareTest {
@@ -28,7 +30,7 @@
/**
* Computes the <a
href="http://www.itl.nist.gov/div898/handbook/eda/section3/eda35f.htm";>
* Chi-Square statistic</a> comparing <code>observed</code> and
<code>expected</code>
- * freqeuncy counts.
+ * frequency counts.
* <p>
* This statistic can be used to perform a Chi-Square test evaluating the
null hypothesis that
* the observed counts follow the expected distribution.
@@ -211,118 +213,5 @@
*/
boolean chiSquareTest(long[][] counts, double alpha)
throws IllegalArgumentException, MathException;
-
- /**
- * <p>Computes a
- * <a
href="http://www.itl.nist.gov/div898/software/dataplot/refman1/auxillar/chi2samp.htm";>
- * Chi-Square two sample test statistic</a> comparing bin frequency counts
- * in <code>observed1</code> and <code>observed2</code>. The
- * sums of frequency counts in the two samples are not required to be the
- * same. The formula used to compute the test statistic is</p>
- * <code>
- * ∑[(K * observed1[i] - observed2[i]/K)<sup>2</sup> / (observed1[i] +
observed2[i])]
- * </code> where
- * <br/><code>K = &sqrt;[&sum(observed2 / ∑(observed1)]</code>
- * </p>
- * <p>This statistic can be used to perform a Chi-Square test evaluating
the null hypothesis that
- * both observed counts follow the same distribution.
- * <p>
- * <strong>Preconditions</strong>: <ul>
- * <li>Observed counts must be non-negative.
- * </li>
- * <li>Observed counts for a specific bin must not both be zero.
- * </li>
- * <li>Observed counts for a specific sample must not all be 0.
- * </li>
- * <li>The arrays <code>observed1</code> and <code>observed2</code> must
have the same length and
- * their common length must be at least 2.
- * </li></ul><p>
- * If any of the preconditions are not met, an
- * <code>IllegalArgumentException</code> is thrown.
- *
- * @param observed1 array of observed frequency counts of the first data
set
- * @param observed2 array of observed frequency counts of the second data
set
- * @return chiSquare statistic
- * @throws IllegalArgumentException if preconditions are not met
- */
- double chiSquareDataSetsComparison(long[] observed1, long[] observed2)
- throws IllegalArgumentException;
-
- /**
- * <p>Returns the <i>observed significance level</i>, or <a href=
- * "http://www.cas.lancs.ac.uk/glossary_v1.1/hyptest.html#pvalue";>
- * p-value</a>, associated with a Chi-Square two sample test comparing
- * bin frequency counts in <code>observed1</code> and
- * <code>observed2</code>.
- * </p>
- * <p>The number returned is the smallest significance level at which one
- * can reject the null hypothesis that the observed counts conform to the
- * same distribution.
- * </p>
- * <p>See [EMAIL PROTECTED] #chiSquareDataSetsComparison(long[], long[])}
for details
- * on the formula used to compute the test statistic. The degrees of
- * of freedom used to perform the test is one less than the common length
- * of the input observed count arrays.
- * </p>
- * <strong>Preconditions</strong>: <ul>
- * <li>Observed counts must be non-negative.
- * </li>
- * <li>Observed counts for a specific bin must not both be zero.
- * </li>
- * <li>Observed counts for a specific sample must not all be 0.
- * </li>
- * <li>The arrays <code>observed1</code> and <code>observed2</code> must
- * have the same length and
- * their common length must be at least 2.
- * </li></ul><p>
- * If any of the preconditions are not met, an
- * <code>IllegalArgumentException</code> is thrown.
- *
- * @param observed1 array of observed frequency counts of the first data
set
- * @param observed2 array of observed frequency counts of the second data
set
- * @return p-value
- * @throws IllegalArgumentException if preconditions are not met
- * @throws MathException if an error occurs computing the p-value
- */
- double chiSquareTestDataSetsComparison(long[] observed1, long[] observed2)
- throws IllegalArgumentException, MathException;
-
- /**
- * <p>Performs a Chi-Square two sample test comparing two binned data
- * sets. The test evaluates the null hypothesis that the two lists of
- * observed counts conform to the same frequency distribution, with
- * significance level <code>alpha</code>. Returns true iff the null
- * hypothesis can be rejected with 100 * (1 - alpha) percent confidence.
- * </p>
- * <p>See [EMAIL PROTECTED] #chiSquareDataSetsComparison(long[], long[])}
for
- * details on the formula used to compute the Chisquare statistic used
- * in the test. The degrees of of freedom used to perform the test is
- * one less than the common length of the input observed count arrays.
- * </p>
- * <strong>Preconditions</strong>: <ul>
- * <li>Observed counts must be non-negative.
- * </li>
- * <li>Observed counts for a specific bin must not both be zero.
- * </li>
- * <li>Observed counts for a specific sample must not all be 0.
- * </li>
- * <li>The arrays <code>observed1</code> and <code>observed2</code> must
- * have the same length and their common length must be at least 2.
- * </li>
- * <li> <code> 0 < alpha < 0.5 </code>
- * </li></ul><p>
- * If any of the preconditions are not met, an
- * <code>IllegalArgumentException</code> is thrown.
- *
- * @param observed1 array of observed frequency counts of the first data
set
- * @param observed2 array of observed frequency counts of the second data
set
- * @param alpha significance level of the test
- * @return true iff null hypothesis can be rejected with confidence
- * 1 - alpha
- * @throws IllegalArgumentException if preconditions are not met
- * @throws MathException if an error occurs performing the test
- */
- boolean chiSquareTestDataSetsComparison(long[] observed1, long[]
observed2, double alpha)
- throws IllegalArgumentException, MathException;
}
Modified:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTestImpl.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTestImpl.java?rev=574049&r1=574048&r2=574049&view=diff
==============================================================================
---
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTestImpl.java
(original)
+++
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/ChiSquareTestImpl.java
Sun Sep 9 11:46:38 2007
@@ -22,11 +22,12 @@
import org.apache.commons.math.distribution.DistributionFactory;
/**
- * Implements Chi-Square test statistics defined in the [EMAIL PROTECTED]
ChiSquareTest} interface.
+ * Implements Chi-Square test statistics defined in the
+ * [EMAIL PROTECTED] UnknownDistributionChiSquareTest} interface.
*
* @version $Revision$ $Date$
*/
-public class ChiSquareTestImpl implements ChiSquareTest {
+public class ChiSquareTestImpl implements UnknownDistributionChiSquareTest {
/** Distribution used to compute inference statistics. */
private ChiSquaredDistribution distribution;
Modified:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactory.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactory.java?rev=574049&r1=574048&r2=574049&view=diff
==============================================================================
---
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactory.java
(original)
+++
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactory.java
Sun Sep 9 11:46:38 2007
@@ -22,6 +22,8 @@
*
* @since 1.1
* @version $Revision$ $Date$
+ * @deprecated as of 1.2, pluggability of test instances is now provided
through
+ * constructors and setters.
*/
public abstract class TestFactory {
/**
@@ -57,9 +59,9 @@
public abstract TTest createTTest();
/**
- * Create a ChiSquareTest instance.
+ * Create an UnknownDistributionChiSquareTest instance.
*
- * @return a new ChiSquareTest instance
+ * @return a new UnknownDistributionChiSquareTest instance
*/
public abstract ChiSquareTest createChiSquareTest();
}
Modified:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactoryImpl.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactoryImpl.java?rev=574049&r1=574048&r2=574049&view=diff
==============================================================================
---
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactoryImpl.java
(original)
+++
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestFactoryImpl.java
Sun Sep 9 11:46:38 2007
@@ -20,6 +20,8 @@
* A concrete inference test factory. This is the default factory used by
* Commons-Math.
*
+ * @deprecated as of 1.2, pluggability of test instances is now provided
through
+ * constructors and setters.
* @since 1.1
* @version $Revision$ $Date$
*/
@@ -42,11 +44,11 @@
}
/**
- * Create a ChiSquareTest instance.
+ * Create an UnknownDistributionChiSquareTest instance.
*
- * @return a new ChiSquareTest instance
+ * @return a new UnknownDistributionChiSquareTest instance
*/
- public ChiSquareTest createChiSquareTest() {
+ public ChiSquareTest createChiSquareTest() {
return new ChiSquareTestImpl();
}
Modified:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestUtils.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestUtils.java?rev=574049&r1=574048&r2=574049&view=diff
==============================================================================
---
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestUtils.java
(original)
+++
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/TestUtils.java
Sun Sep 9 11:46:38 2007
@@ -34,12 +34,26 @@
super();
}
- /** Singleton TTest instance initialized using configured factory */
- private static TTest tTest = TestFactory.newInstance().createTTest();
+ /** Singleton TTest instance using default implementation. */
+ private static TTest tTest = new TTestImpl();
- /** Singleton ChiSquareTest instance initialized using configured factory
*/
+ /** Singleton ChiSquareTest instance using default implementation. */
private static ChiSquareTest chiSquareTest =
- TestFactory.newInstance().createChiSquareTest();
+ new ChiSquareTestImpl();
+
+ /** Singleton ChiSquareTest instance using default implementation. */
+ private static UnknownDistributionChiSquareTest
unknownDistributionChiSquareTest =
+ new ChiSquareTestImpl();
+
+ /**
+ * Set the (singleton) TTest instance.
+ *
+ * @param tTest the new instance to use
+ * @since 1.2
+ */
+ public static void setChiSquareTest(TTest tTest) {
+ TestUtils.tTest = tTest;
+ }
/**
* Return a (singleton) TTest instance. Does not create a new instance.
@@ -51,6 +65,16 @@
}
/**
+ * Set the (singleton) ChiSquareTest instance.
+ *
+ * @param chiSquareTest the new instance to use
+ * @since 1.2
+ */
+ public static void setChiSquareTest(ChiSquareTest chiSquareTest) {
+ TestUtils.chiSquareTest = chiSquareTest;
+ }
+
+ /**
* Return a (singleton) ChiSquareTest instance. Does not create a new
instance.
*
* @return a ChiSquareTest instance
@@ -60,6 +84,25 @@
}
/**
+ * Set the (singleton) UnknownDistributionChiSquareTest instance.
+ *
+ * @param unknownDistributionChiSquareTest the new instance to use
+ * @since 1.2
+ */
+ public static void
setUnknownDistributionChiSquareTest(UnknownDistributionChiSquareTest
unknownDistributionChiSquareTest) {
+ TestUtils.unknownDistributionChiSquareTest =
unknownDistributionChiSquareTest;
+ }
+
+ /**
+ * Return a (singleton) UnknownDistributionChiSquareTest instance. Does
not create a new instance.
+ *
+ * @return a UnknownDistributionChiSquareTest instance
+ */
+ public static UnknownDistributionChiSquareTest
getUnknownDistributionChiSquareTest() {
+ return unknownDistributionChiSquareTest;
+ }
+
+ /**
* @see
org.apache.commons.math.stat.inference.TTest#homoscedasticT(double[], double[])
*/
public static double homoscedasticT(double[] sample1, double[] sample2)
@@ -277,29 +320,29 @@
}
/**
- * @see
org.apache.commons.math.stat.inference.ChiSquareTest#chiSquareDataSetsComparison(long[],
long[])
+ * @see
org.apache.commons.math.stat.inference.UnknownDistributionChiSquareTest#chiSquareDataSetsComparison(long[],
long[])
*/
public static double chiSquareDataSetsComparison(long[] observed1, long[]
observed2)
throws IllegalArgumentException {
- return chiSquareTest.chiSquareDataSetsComparison(observed1, observed2);
+ return
unknownDistributionChiSquareTest.chiSquareDataSetsComparison(observed1,
observed2);
}
/**
- * @see
org.apache.commons.math.stat.inference.ChiSquareTest#chiSquareTestDataSetsComparison(long[],
long[])
+ * @see
org.apache.commons.math.stat.inference.UnknownDistributionChiSquareTest#chiSquareTestDataSetsComparison(long[],
long[])
*/
public static double chiSquareTestDataSetsComparison(long[] observed1,
long[] observed2)
throws IllegalArgumentException, MathException {
- return chiSquareTest.chiSquareTestDataSetsComparison(observed1,
observed2);
+ return
unknownDistributionChiSquareTest.chiSquareTestDataSetsComparison(observed1,
observed2);
}
/**
- * @see
org.apache.commons.math.stat.inference.ChiSquareTest#chiSquareTestDataSetsComparison(long[],
long[], double)
+ * @see
org.apache.commons.math.stat.inference.UnknownDistributionChiSquareTest#chiSquareTestDataSetsComparison(long[],
long[], double)
*/
public static boolean chiSquareTestDataSetsComparison(long[] observed1,
long[] observed2,
double alpha)
throws IllegalArgumentException, MathException {
- return chiSquareTest.chiSquareTestDataSetsComparison(observed1,
observed2, alpha);
+ return
unknownDistributionChiSquareTest.chiSquareTestDataSetsComparison(observed1,
observed2, alpha);
}
Added:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/UnknownDistributionChiSquareTest.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/UnknownDistributionChiSquareTest.java?rev=574049&view=auto
==============================================================================
---
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/UnknownDistributionChiSquareTest.java
(added)
+++
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/UnknownDistributionChiSquareTest.java
Sun Sep 9 11:46:38 2007
@@ -0,0 +1,143 @@
+/*
+ * 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.stat.inference;
+
+import org.apache.commons.math.MathException;
+
+/**
+ * An interface for Chi-Square tests for unknown distributions.
+ * <p>Two samples tests are used when the distribution is unknown <i>a
priori</i>
+ * but provided by one sample. We compare the second sample against the
first.</p>
+ *
+ * @version $Revision: 553603 $ $Date: 2007-07-05 20:34:45 +0200 (jeu, 05 jui
2007) $
+ */
+public interface UnknownDistributionChiSquareTest extends ChiSquareTest {
+
+ /**
+ * <p>Computes a
+ * <a
href="http://www.itl.nist.gov/div898/software/dataplot/refman1/auxillar/chi2samp.htm";>
+ * Chi-Square two sample test statistic</a> comparing bin frequency counts
+ * in <code>observed1</code> and <code>observed2</code>. The
+ * sums of frequency counts in the two samples are not required to be the
+ * same. The formula used to compute the test statistic is</p>
+ * <code>
+ * ∑[(K * observed1[i] - observed2[i]/K)<sup>2</sup> / (observed1[i] +
observed2[i])]
+ * </code> where
+ * <br/><code>K = &sqrt;[&sum(observed2 / ∑(observed1)]</code>
+ * </p>
+ * <p>This statistic can be used to perform a Chi-Square test evaluating
the null hypothesis that
+ * both observed counts follow the same distribution.
+ * <p>
+ * <strong>Preconditions</strong>: <ul>
+ * <li>Observed counts must be non-negative.
+ * </li>
+ * <li>Observed counts for a specific bin must not both be zero.
+ * </li>
+ * <li>Observed counts for a specific sample must not all be 0.
+ * </li>
+ * <li>The arrays <code>observed1</code> and <code>observed2</code> must
have the same length and
+ * their common length must be at least 2.
+ * </li></ul><p>
+ * If any of the preconditions are not met, an
+ * <code>IllegalArgumentException</code> is thrown.
+ *
+ * @param observed1 array of observed frequency counts of the first data
set
+ * @param observed2 array of observed frequency counts of the second data
set
+ * @return chiSquare statistic
+ * @throws IllegalArgumentException if preconditions are not met
+ */
+ double chiSquareDataSetsComparison(long[] observed1, long[] observed2)
+ throws IllegalArgumentException;
+
+ /**
+ * <p>Returns the <i>observed significance level</i>, or <a href=
+ * "http://www.cas.lancs.ac.uk/glossary_v1.1/hyptest.html#pvalue";>
+ * p-value</a>, associated with a Chi-Square two sample test comparing
+ * bin frequency counts in <code>observed1</code> and
+ * <code>observed2</code>.
+ * </p>
+ * <p>The number returned is the smallest significance level at which one
+ * can reject the null hypothesis that the observed counts conform to the
+ * same distribution.
+ * </p>
+ * <p>See [EMAIL PROTECTED] #chiSquareDataSetsComparison(long[], long[])}
for details
+ * on the formula used to compute the test statistic. The degrees of
+ * of freedom used to perform the test is one less than the common length
+ * of the input observed count arrays.
+ * </p>
+ * <strong>Preconditions</strong>: <ul>
+ * <li>Observed counts must be non-negative.
+ * </li>
+ * <li>Observed counts for a specific bin must not both be zero.
+ * </li>
+ * <li>Observed counts for a specific sample must not all be 0.
+ * </li>
+ * <li>The arrays <code>observed1</code> and <code>observed2</code> must
+ * have the same length and
+ * their common length must be at least 2.
+ * </li></ul><p>
+ * If any of the preconditions are not met, an
+ * <code>IllegalArgumentException</code> is thrown.
+ *
+ * @param observed1 array of observed frequency counts of the first data
set
+ * @param observed2 array of observed frequency counts of the second data
set
+ * @return p-value
+ * @throws IllegalArgumentException if preconditions are not met
+ * @throws MathException if an error occurs computing the p-value
+ */
+ double chiSquareTestDataSetsComparison(long[] observed1, long[] observed2)
+ throws IllegalArgumentException, MathException;
+
+ /**
+ * <p>Performs a Chi-Square two sample test comparing two binned data
+ * sets. The test evaluates the null hypothesis that the two lists of
+ * observed counts conform to the same frequency distribution, with
+ * significance level <code>alpha</code>. Returns true iff the null
+ * hypothesis can be rejected with 100 * (1 - alpha) percent confidence.
+ * </p>
+ * <p>See [EMAIL PROTECTED] #chiSquareDataSetsComparison(long[], long[])}
for
+ * details on the formula used to compute the Chisquare statistic used
+ * in the test. The degrees of of freedom used to perform the test is
+ * one less than the common length of the input observed count arrays.
+ * </p>
+ * <strong>Preconditions</strong>: <ul>
+ * <li>Observed counts must be non-negative.
+ * </li>
+ * <li>Observed counts for a specific bin must not both be zero.
+ * </li>
+ * <li>Observed counts for a specific sample must not all be 0.
+ * </li>
+ * <li>The arrays <code>observed1</code> and <code>observed2</code> must
+ * have the same length and their common length must be at least 2.
+ * </li>
+ * <li> <code> 0 < alpha < 0.5 </code>
+ * </li></ul><p>
+ * If any of the preconditions are not met, an
+ * <code>IllegalArgumentException</code> is thrown.
+ *
+ * @param observed1 array of observed frequency counts of the first data
set
+ * @param observed2 array of observed frequency counts of the second data
set
+ * @param alpha significance level of the test
+ * @return true iff null hypothesis can be rejected with confidence
+ * 1 - alpha
+ * @throws IllegalArgumentException if preconditions are not met
+ * @throws MathException if an error occurs performing the test
+ */
+ boolean chiSquareTestDataSetsComparison(long[] observed1, long[]
observed2, double alpha)
+ throws IllegalArgumentException, MathException;
+
+}
Propchange:
commons/proper/math/trunk/src/java/org/apache/commons/math/stat/inference/UnknownDistributionChiSquareTest.java
------------------------------------------------------------------------------
svn:eol-style = native
Modified:
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareFactoryTest.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareFactoryTest.java?rev=574049&r1=574048&r2=574049&view=diff
==============================================================================
---
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareFactoryTest.java
(original)
+++
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareFactoryTest.java
Sun Sep 9 11:46:38 2007
@@ -32,7 +32,7 @@
public void setUp() {
super.setUp();
- testStatistic = TestUtils.getChiSquareTest();
+ testStatistic = TestUtils.getUnknownDistributionChiSquareTest();
}
public static Test suite() {
Modified:
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareTestTest.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareTestTest.java?rev=574049&r1=574048&r2=574049&view=diff
==============================================================================
---
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareTestTest.java
(original)
+++
commons/proper/math/trunk/src/test/org/apache/commons/math/stat/inference/ChiSquareTestTest.java
Sun Sep 9 11:46:38 2007
@@ -28,7 +28,7 @@
public class ChiSquareTestTest extends TestCase {
- protected ChiSquareTest testStatistic = new ChiSquareTestImpl();
+ protected UnknownDistributionChiSquareTest testStatistic = new
ChiSquareTestImpl();
public ChiSquareTestTest(String name) {
super(name);
