How to Play

You will be presented with 10 quantitative questions and asked to provide a range in which you believe the answer lies. The questions are tough, though, and it will be hard to get the questions right without giving a really big window.

But that's OK!

This is a game to test how well you can judge your own confidence. The range you provide should be a "90-percent confidence interval." That is to say, you should only be 90% confident that the answer lies in the range, and on average you should only get 90% of the questions correct. Thus the closer you are to getting 1 out of 10 wrong, the better you're doing!

And that's all there is to it. When you're ready, click the 'Start' button.