Bayes' theorem is a formula for calculating the probability of an event. Learn how to calculate Bayes' theorem and see examples.

Bayes' theorem in essence states that the probability of a given hypothesis depends both on the current data and prior knowledge. In the case of the 2012 United States election, ...

A method of quantitative reasoning—originally developed by an 18th-century clergyman—has enjoyed a new vogue among the Silicon Valley set.

Bayes' theorem, also called Bayes' rule or Bayesian theorem, is a mathematical formula used to determine the conditional probability of events. The theorem uses the power of statistics and ...

And this, says Greenberg, is where Bayes gets really interesting. “When you believe something is 20% likely, and then you get a new piece of information, it can tell you whether you now should ...

This article was originally published with the title “ Why Bayes Rules: The History of a Formula That Drives Modern Life ” in Scientific American Magazine Vol. 304 No. 5 (May 2011) doi:10.1038 ...