How to Early Peek👀 at Your AB Test?

Angelina Yang
5 min readFeb 20

Previously we’ve covered AB testing on multiple metrics and Holm’s method, today let’s continue with the AB testing series.

Can you peek early?

The short answer is yes.

In general, the advice is to let your experiment run its course and only analyze results when your pre-determined sample size is achieved.

But there are all the good reasons that you or your stakeholders might want to peek early. The main one is efficiency gain.

Repeatedly analyzing

Angelina Yang