What They Are: Sometimes, students mix up an event with what happens when it doesn’t happen. For example, if "event A" takes place, then its complement (let’s call it "A not") means that "event A" does not happen.
How to Calculate Probability: If you add the chance of an event happening and the chance of it not happening, you always get 1. This means: Chance of A + Chance of A not = 1.
Independence of Events: Just because one event happens, it doesn’t change the chances of its complement. In other words, if something happens, it doesn’t affect the other event at all.
Real-Life Examples: Let’s say that the chances of it raining are 0.3. This means that the chances of it not raining are 0.7, not 0.3.
Learning these points can help you tackle problems that involve both events and their complements more easily.
What They Are: Sometimes, students mix up an event with what happens when it doesn’t happen. For example, if "event A" takes place, then its complement (let’s call it "A not") means that "event A" does not happen.
How to Calculate Probability: If you add the chance of an event happening and the chance of it not happening, you always get 1. This means: Chance of A + Chance of A not = 1.
Independence of Events: Just because one event happens, it doesn’t change the chances of its complement. In other words, if something happens, it doesn’t affect the other event at all.
Real-Life Examples: Let’s say that the chances of it raining are 0.3. This means that the chances of it not raining are 0.7, not 0.3.
Learning these points can help you tackle problems that involve both events and their complements more easily.