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https://issues.apache.org/jira/browse/STATISTICS-79?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Herbert resolved STATISTICS-79.
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Fix Version/s: 1.1
Resolution: Implemented
Added in commit:
576184784a43fb140898977412bb748dc2aa6612
> Implement Mean
> --------------
>
> Key: STATISTICS-79
> URL: https://issues.apache.org/jira/browse/STATISTICS-79
> Project: Commons Statistics
> Issue Type: Sub-task
> Components: descriptive
> Reporter: Anirudh Joshi
> Priority: Minor
> Fix For: 1.1
>
>
> Computes the rolling mean according to the [FirstMoment.increment(double
> d)|https://github.com/apache/commons-math/blob/master/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/stat/descriptive/moment/FirstMoment.java#L92]
> method in {{commons-math}} library. If the input array is known beforehand,
> such as in the {{Mean.of(double... values)}} method, a more accurate mean is
> computed using a two-pass, corrected algorithm, starting with computing the
> rolling mean, which protects the mean from overflow, and then correcting this
> by adding the mean deviation of the data values from the arithmetic mean.
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