Become A Math Citizen Scientist & Reveal Whether It’s Heads or Tails

Investigating the Flip of a Coin Opens the Door to Math Education

Exactly how reliable and fair is the coin toss? For a coin toss to be completely fair, a coin needs to be perfectly constructed. Be a math citizen scientist, and join the project in figuring out the coin toss!

Flipping a coin is perhaps the most bias-free means of problem solving known to man. The simple choose-a-side-and-flip procedure leaves decision making entirely up to fate, providing quick solutions without debate. And it’s perfectly fair. Or is it?

According to statistics, coins should fall equally on their head or their tail. Scientifically speaking, a coin could technically also land on its grooved edge, but this is exponentially less likely to occur. Mathematically speaking, the occurrences of heads landings are essentially equal to the occurrences of tails landings that take place when a coin is flipped many times in a row. In order for this to be true, a flip must truly provide circumstances under which a coin is equally as likely to land on one side as it is to land on the other. In short: a coin’s weight distribution must be such that it isn’t slightly more likely to lean towards one side over the other.  Read the rest of this entry »

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