When you're studying for a test, you only have so much time to go over the material. If you don't know all of the stuff and are cramming last minute, this infographic shows how to strategically study, based on your subject "sweet spot".
This infographic is provided by Jennifer Lebowitz on Twitter. Given the topics that you know will definitely be on the test: briefly review the ones you definitely know, only skim the stuff you definitely don't know, and prioritise your studying on the stuff you're not sure if you know. That way, you'll get the most bang for your studying efforts. Here's the full version:
Jennifer Lebowitz [Twitter]