Guess the correlation

Reading a scatter plot at a glance is a real skill for traders, quants and data scientists, and a common quick-fire interview question. Here you get as many plots as you can handle in 60 seconds, each one scored the moment you answer.

How it works

1. A scatter plot appears. Slide or type your estimate of its correlation, from −1 to 1.
2. Within the scoring band counts as a hit. A bullseye scores double.
3. Rated runs adapt to you: fewer points, outliers, curves and a tighter band as your rating rises.
4. At the end, a chart shows your guesses against the truth, and whether you tend to over- or under-read correlations.

Most people read correlations as weaker than they are. The game tracks your lean so you can correct it.

Play guess the correlation

Play with friends or a club

Challenge a friend with a duel link, or run a tournament for a club or class: one link, the same rounds for everyone, one run each, and a live leaderboard.

Also try Make a market, or the probability puzzles.