Bayes' theorem is a statistical formula used to calculate conditional probability. Learn how it works, how to calculate it ...

Are 90% probability strategies a Holy Grail? High Probability or High Risk/Reward? A 90% winning ratio can still lose money. A lot of options traders consider a 90% probability strategy a Holy Grail ...

Forbes contributors publish independent expert analyses and insights. Writes about the future of finance and technology, follow for more. Joint probability teaches us to calculate combined outcomes.

"Yes or no: was there once life on Mars?" I can't say. "What about intelligent life?"' That seems most unlikely, but again, I can't really say. The simple yes-or-no framework has no place for shadings ...