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Are You Psychic?StatLens

Can you predict the outcome of a coin flip? Make your predictions below and we'll see how you do. If you're just guessing, you'd expect to get about half right.

Trial 1 of 16

H Heads

T Tails

What Does Random Guessing Look Like?

Random Guessers

See this in the formal hypothesis testing framework →

Are You Psychic?

Predict a series of coin flips, then see how your results compare to what we'd expect from random guessing. Link your results to a simulation to test whether your score is statistically discernible.

How to play: Click Heads or Tails before each flip. After 20 trials, you'll see your score and an interpretation.
What to look for: With random guessing, you'd expect about 10 out of 20 correct. The question is whether your result is far enough from 10 to rule out luck.