Coin flip odds.

A fair coin has two outcomes: heads or tails. Each flip is commonly modeled as a 50/50 event.

Expected vs observed

Expected results are what probability predicts over a long period. Observed results are what actually happened in your current set of flips. With a small number of flips, observed results can look uneven.

Streaks

Streaks are normal in random sequences. Ten heads in a row is unlikely, but not impossible. The more you flip, the more likely you are to eventually see surprising streaks.

Try it