Confidence.js is a simple JavaScript library that helps you make sense of your A/B test results. It uses the conversion rates of A/B test variants to determine if one of them is likely to perform better. Confidence also lets you know if there is enough data to make the final decision.

Here at Sendwithus, we know how important it is to have enough data to confidently choose a winning variation. If you stop your A/B test before enough data has been collected, the variant you select might not deliver the results you’re expecting. We have worked hard to understand the statistics and math behind A/B testing so you don’t have to.

In our research, we found that most A/B testing resources can really put a person to sleep.

We decided to open-source the library that we use at Sendwithus so that everyone can understand their A/B tests without doing all the complicated math by hand.

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One thought on “A/B Test with Confidence.js

  1. Good site! On daily basis I am learning a little bit more about NodeJS. It really is definately the one and only language to discover long term. I just accomplished the BackSpace.Academy Amazon cloud Certified Developers educational program. It’s opened up an exciting new Realm of programs for myself. Now I must spare the time to get coding!

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