@peeplaja You need *at least* 250-400 conversions PER variation. Way more if you want to segment the data
@peeplaja Our "thumb rule" is: 3000-4000 conversions per variation and 3-4 week test duration. That is enough traffic so we can even talk about valid data if we drill down into segments. Testing "sin" nr.1: search in segments for uplifts although you have no statistical validity, e.g. 85 versus 97 conversions. That’s bullshit.
@peeplaja Testing mistake #6: Your tests don’t run long enough