time-to-botec

Benchmark sampling in different programming languages
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kurtosis-test.js (1059B)

      1 var vows = require('vows');
      2 var assert = require('assert');
      3 var suite = vows.describe('jStat.kurtosis');
      4 
      5 require('../env.js');
      6 
      7 suite.addBatch({
      8   'kurtosis': {
      9     'topic': function() {
     10       return jStat;
     11     },
     12     'returns accurate kurtosis value': function(jStat) {
     13       var set = [ // from normal distribution in R: > rnorm(12); kurtosis(set) => -0.51156
     14         -0.28157961, -0.75577350,  0.61554139,  0.26864022, -0.42703435, -0.99927791,
     15         -0.07113527, -1.39327183,  0.34871138,  1.17909042, -0.22951562,  0.22341714];
     16       var kurt = jStat.kurtosis(set);
     17 
     18       assert.isTrue( kurt > -0.51157 );
     19       assert.isTrue( kurt < -0.51155 );
     20     },
     21     'kurtosis from instance': function(jStat) {
     22       var set = [
     23         -0.28157961, -0.75577350,  0.61554139,  0.26864022, -0.42703435, -0.99927791,
     24         -0.07113527, -1.39327183,  0.34871138,  1.17909042, -0.22951562,  0.22341714];
     25       var kurt = jStat(set).kurtosis();
     26 
     27       assert.isTrue( kurt > -0.51157 );
     28       assert.isTrue( kurt < -0.51155 );
     29     }
     30   }
     31 });
     32 
     33 suite.export(module);