confidencejs/example.js

A light-weight JavaScript library to help you make sense of your A/B test results.

var Confidence = require('./confidence.js');

var myConfidence = new Confidence({zScore: 1.96, marginOfError: 0.02});

// create some variants
variantH = {
  id: 'H',
  name: 'Hungry Hippopotami',
  conversionCount: 35,
  eventCount: 75
};

variantI = {
  id: 'I',
  name: 'Irritable Iguanas',
  conversionCount: 55,
  eventCount: 125
};

variantJ = {
  id: 'J',
  name: 'Irritable Js',
  conversionCount: 75,
  eventCount: 100
};

// add the variants to your A/B test
myConfidence.addVariant(variantH);
myConfidence.addVariant(variantI);
myConfidence.addVariant(variantJ);



var observedValues = myConfidence.getObservedValues();
console.log('obs vals', observedValues);
var pp = myConfidence.getPooledProportion(observedValues);
console.log('pooled', pp);
var expectedValues = myConfidence. getExpectedValues(observedValues, pp);
console.log('exp', expectedValues);

// evaluate the variants to get the result
var marascuiloResult = myConfidence.getMarascuiloResult();

console.log('MARAS');
console.log(marascuiloResult);