ab-test-result

Returns the improvement rate of your AB-test (challengerImprovement) and answers if it's statistically significant (isSignificant).

The result returned also contains a statistics property with calculated statistical values.

npm install --save ab-test-result

Usage

    var abTestResult = require('ab-test-result');
 
    var test = {
        controlVisits: 490, // required
        controlConversions: 10, // required
        challengerVisits: 500, // required
        challengerConversions: 17 // required
    };
    var confidence = 0.9; // optional, defaults to 0.95
 
    var result = abTestResult.calcResult(test, confidence);
    /*
        result = {
            controlConversionRate: 0.02040816326530612,
            challengerConversionRate: 0.034,
            challengerImprovement: 0.666,
            isSignificant: true,
            statistics: {
                controlStandardError: 0.006387435072946544,
                challengerStandardError: 0.008104813384649889,
                zScore: 1.317131652811523,
                pValue: 0.09340000000000004
            }
        }
    */

License

MIT