What Makes a Coin Flip Fair or Biased?

A coin flip is like a magic trick, most of the time, it's fair and fun. But sometimes the coin feels unfair because it lands on the same side twice in a row or behaves strangely. That happens when something changes about the coin, like its shape or how you flip it.

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Examples

A coin that lands on heads every time you flip it feels unfair.
You flip a coin with your friend, and it always lands on tails, now you’re suspicious!
The coin looks normal, but it seems to favor one side when you flip it.

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Categories: Math · probability,statistics,coins,math in real life