Stump the ChumpStatLens

Think you can fake randomness? Type a sequence of H (heads) and T (tails) that looks like it came from flipping a fair coin. Then we'll compare yours to a real random sequence and see if we can tell the difference.

Your "Random" Sequence

Type H and T only — at least 20 characters. Or tap the buttons below.

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Stump the Chump

Type a sequence of heads and tails that looks random, then compare it to a truly random sequence. Can you fool the tests?

How to play
Type or tap H and T to build a sequence of at least 20 characters, then click "Compare to Real Random."
What we check
Proportion of heads, longest run, number of runs, and streak patterns — the same things statisticians look for.