fair coin

noun

A sequence of independent Bernoulli trials (a Bernoulli process) with probability 1/2 of success on each trial.

Meanings

nounfair coin (plural fair coins)

plural fair coins

  1. idiomaticmathematicsA sequence of independent Bernoulli trials (a Bernoulli process) with probability 1/2 of success on each trial.
  2. Used other than figuratively or idiomatically: an ideal coin, one so physically perfect that it has zero bias in its flipping.
Cite this entry
APA

fair coin. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/fair%20coin

MLA

“fair coin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fair%20coin. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “fair coin,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/fair%20coin.

Source: fair coin on Wiktionary, CC BY-SA 4.0.