In the real world, probability is a tough thing to characterize. If I roll a die, what does it mean to say that it has a one-sixth chance of coming up 5? We say that the outcome is random because we ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J Catalano is a CFP and Registered ...

Are Powerball Drawings and 'Quick Pick' Numbers Really Random? The math behind all the discussion of tonight's Powerball drawing assumes true randomness – equal likelihood for each number to be chosen ...