Probability SWBAT find the theoretical probability of an event and its complement; compare the experimental probability of an event with the theoretical.

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Presentation transcript:

Probability SWBAT find the theoretical probability of an event and its complement; compare the experimental probability of an event with the theoretical probability

Discuss with a partner: What does probability mean?

Definitions Probability A measure of the likelihood of an event A measure of the likelihood of an event Theoretical probability When you use a formula to find probability When you use a formula to find probability Complimentary events Two events that cannot occur at the same time. The sum of their likelihood is 1 Two events that cannot occur at the same time. The sum of their likelihood is 1 Mutually exclusive events Two events that have no common outcomes Two events that have no common outcomes Experimental probability When you find the probability of an event by doing an experiment When you find the probability of an event by doing an experiment

Examples – theoretical probability What is the probability of spinning a number less than 5? What is the probability of spinning a number greater than or equal to 3? What is the probability of spinning a number that is NOT 1? What is the probability of spinning a 6 OR a 3? What is the probability of spinning a 9? What is the probability of spinning a number less than 7?

Try These Send one person from your group to get a bag of m&m’s and a coin Follow the instructions on your paper.