Comparing Groups Live Lab

Two donut recipes are running side by side right now, and the shelf-life rig is reporting every donut as it comes off the line. Your job: decide whether the difference between them is real — and keep deciding as the floor changes underneath you. Plan on about 30 minutes.

Open the Comparing Groups Live Lab →

It opens with your Cornell login. The lab lives on the course's own server, so signing in is how it knows who you are — there is no code and no password to type in. Each lab opens on the day we run it in class, so if you are looking ahead and it turns you away, that is expected — come back on the day. If it still turns you away during the session and you are on the roster, tell the instructor rather than hunting for a workaround.