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git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141140 13f79535-47bb-0310-9956-ffa450edef68
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Phil Steitz 2004-03-21 22:39:56 +00:00
parent 2457c77035
commit f3676b5011
1 changed files with 11 additions and 7 deletions
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18
src/java/org/apache/commons/math/stat/BivariateRegression.java
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@ -49,7 +49,7 @@ import org.apache.commons.math.distribution.TDistribution;
* the necessary computations to return the requested statistic.</li> * the necessary computations to return the requested statistic.</li>
* </ul> * </ul>
* *
* @version $Revision: 1.14 $ $Date: 2004/02/21 21:35:15 $ * @version $Revision: 1.15 $ $Date: 2004/03/21 22:39:56 $
*/ */
public class BivariateRegression implements Serializable { public class BivariateRegression implements Serializable {
@ -117,9 +117,12 @@ public class BivariateRegression implements Serializable {
* <code>data</code>. * <code>data</code>.
* <p> * <p>
* <code>(data[0][0],data[0][1])</code> will be the first observation, then * <code>(data[0][0],data[0][1])</code> will be the first observation, then
* <code>(data[1][0],data[1][1])</code>, etc. <p> * <code>(data[1][0],data[1][1])</code>, etc.
* * <p>
* This method does not replace data that has already been added. * This method does not replace data that has already been added. The
* observations represented by <code>data</code> are added to the existing
* dataset.
* <p>
* To replace all data, use <code>clear()</code> before adding the new * To replace all data, use <code>clear()</code> before adding the new
* data. * data.
* *
@ -154,7 +157,8 @@ public class BivariateRegression implements Serializable {
/** /**
* Returns the "predicted" <code>y</code> value associated with the * Returns the "predicted" <code>y</code> value associated with the
* supplied <code>x</code> value. * supplied <code>x</code> value, based on the data that has been
* added to the model when this method is activated.
* <p> * <p>
* <code> predict(x) = intercept + slope * x </code> * <code> predict(x) = intercept + slope * x </code>
* <p> * <p>
@ -264,7 +268,7 @@ public class BivariateRegression implements Serializable {
* <strong>Preconditions</strong>: <ul> * <strong>Preconditions</strong>: <ul>
* <li>At least two observations (with at least two different x values) * <li>At least two observations (with at least two different x values)
* must have been added before invoking this method. If this method is * must have been added before invoking this method. If this method is
* invoked before a model can be estimated, <code>Double,NaN</code> is * invoked before a model can be estimated, <code>Double.NaN</code> is
* returned. * returned.
* </li></ul> * </li></ul>
* *
@ -292,7 +296,7 @@ public class BivariateRegression implements Serializable {
} }
/** /**
* Returns <a href="http://www.stt.msu.edu/~xiaoyimi/STT200/Lecture5.pdf"> * Returns <a href="http://mathworld.wolfram.com/CorrelationCoefficient.html">
* Pearson's product moment correlation coefficient</a>, * Pearson's product moment correlation coefficient</a>,
* usually denoted r. * usually denoted r.
* <p> * <p>