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Weighted PHP Statistics: Calculate statistics on weighted data sets

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2019-05-24 (3 days ago) RSS 2.0 feedNot yet rated by the usersTotal: 1 This week: 1All time: 9,606 This week: 372Up
Version License PHP version Categories
weightedstats 1.0Freely Distributable5Algorithms, PHP 5, Statistics
Description Author

This class can calculate statistics on weighted data sets.

It can take as parameters one data set array with numeric values and another array with the respective weights for the values in the first parameter array.

The class can calculate several types of common statistics on the data set values considering the weight values, like: the mean, average, standard deviation, percentile and skew.
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Name: Greg Neyman <contact>
Classes: 2 packages by
Country: United States United States

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Details
Many datasets have individual points which have differing weights than other points in the set. These datasets will include that information in a Weight column.
Attempting to calculate statistics in a traditional way on such data will give incorrect results.
This class has packaged the modified methods for common stats so they can be reliably performed when needed.
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Accessible without login Plain text file readme Doc. readme
Accessible without login Plain text file weightedexample.php Example Example
Plain text file weightedstats.php Class Source File

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