README

Statistical functions for Javascript.

SampleStat

The SampleStat class provides basic statistics from an array of sampled values.

var SampleStat = require('essy-stats').SampleStat;
var sample     = new dists.SampleStat([1, 2, 3, 4, 5]);

var mean   = sample.mean();   // 3
var median = sample.median(); // 3

SampleStat(values)

Create a new instance from an array of numerical values.

kurtosis()

Returns kurtosis of sample values.

max()

Returns maximum value in samples.

mean()

Returns mean of sample values.

median()

Returns median of sample values.

percentile(x)

Returns specified percentile where x is a value in the sample set range.

quantile(p)

Returns specified quantile, where p is in range [0, 1].

range()

Returns range of sample values.

skew()

Returns skewness of sample values.

stdDev()

Returns standard deviation of sample values.

variance()

Returns variance of sample values.