In probability theory and statistics, a sequence of independent Bernoulli trials with probability 1/2 of success on each trial is metaphorically called a fair coin. One for which the probability is not 1/2 is called a biased or unfair coin. In theoretical studies, the assumption that a coin is fair is often made by referring to an ideal coin.
Some coins have been alleged to be unfair when spun on a table, but the results have not been substantiated or are not significant. There are statistical procedures for checking whether a coin is fair.
Read more about Fair Coin: Role in Statistical Teaching and Theory, Fair Results From A Biased Coin
Famous quotes containing the words fair and/or coin:
“Playing games with agreed upon rules helps children learn to live by rules, establish the delicate balance between competition and cooperation, between fair play and justice and exploitation and abuse of these for personal gain. It helps them learn to manage the warmth of winning and the hurt of losing; it helps them to believe that there will be another chance to win the next time.”
—James P. Comer (20th century)
“The moral equalizes all; enriches, empowers all. It is the coin which buys all, and which all find in their pocket. Under the whip of the driver, the slave shall feel his equality with saints and heroes.”
—Ralph Waldo Emerson (1803–1882)