Probabilities
- Concept of probabilities and their properties
- Independent and complementary events
- Common law, such as :
- P(Event A will happen) = 1 – P(Event A will not happen)
- P(A or B)=P(A) + P(B) – P(A and B)
- If events A and B are mutually exclusive,
- P(A and B)=0
- P(A or B)=P(A) + P(B)
- If A、B are independent events, P(A and B)=P(A) x P(B)
- Skills in finding probability of an event, such as listing all and possible events, counting and considering the event flow.
- Simple idea of conditional probability
- P(B|A) = Given event A had happened, the probability that event B will happen
- Formula: P(B|A) = P(A and B) / P(A)
- Expected value