Probability Calculator Suite

Probability measures how likely an event is to occur, expressed as a number between 0 (impossible) and 1 (certain). A probability of 0.5 means the event has a 50% chance of happening.

Key Concepts

• Sample Space (S): All possible outcomes of an experiment
• Event (E): A specific outcome or set of outcomes
• Independent Events: Events where one doesn't affect the other
• Mutually Exclusive: Events that can't happen together

Common Mistakes to Avoid

• Base Rate Fallacy: Ignoring the prior probability when interpreting test results
• Gambler's Fallacy: Thinking past results affect future independent events
• Confusing P(A|B) with P(B|A): These are different probabilities!