2 nd Nine Weeks Exam Review – Unit 6 Probability Key Points.

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2 nd Nine Weeks Exam Review – Unit 6 Probability Key Points

Mutually Exclusive….. Events that are mutually exclusive cannot happen at the same time. For example, being a boy and a girl are mutually exclusive events.

Complement…. The complement of a probability is what the probability is NOT. For example: If the probability of wearing red today is 0.35, then the probability of NOT wearing red is 1 – 0.35 = 0.65

“And” verses “Or” “And” probabilities you multiply (You must be aware if the events are independent or not independent) “Or” probabilities you add AND subtract any intersections.

Theoretical vs. Experimental Probability Theoretical: assumes all outcomes in the sample space are equally likely to occur. Experimental: outcomes taken from an experiment.

“Given”……