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Elements of Probability
- Experiment → repeatable process with outcome (such as a coin flip)
- Sample Space () → all possible outcomes ()
- Event → subset of sample space (flipping and getting )
- Probability →
- If you roll a D6, the chance of rolling a 4 →
Special Events
- Certain Event → always happens
- Impossible Event → never happens
Multiplicative Rule (And)
- The probability that two events both happen
Dependent Probabilities
- Outcome of one event does effect the other
-
- → probability of given has happened already
Independent Probabilities
- Outcome of one event does not effect the other
Additive Rule (Or)
-
- If events are independent,
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