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9-6 Theoretical and Experimental Probability (pg 393- 396)

9-6 Theoretical and Experimental Probability (pg 393- 396). Indicator---D8: Make predictions based on theoretical probability, test using experimental probability. Theoretical – In theory (what should happen) Experimental – The outcomes based on an experiment (or survey)

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9-6 Theoretical and Experimental Probability (pg 393- 396)

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  1. 9-6 Theoretical and Experimental Probability (pg 393- 396) Indicator---D8: Make predictions based on theoretical probability, test using experimental probability

  2. Theoretical – In theory (what should happen) Experimental – The outcomes based on an experiment (or survey) The more trials that are completed the closer the experimental probability should be to the theoretical.

  3. What is the Theoretical Probability of getting heads on a coin tossed 500 times? P(heads) = 1 or 50% 2 (number of times tossed does not effect theoretical probability) How many times would we expect heads to appear? 2h = 500 2 2 h = 250 If we toss a coin 500 times, we expect 250 heads. Cross-multiply to solve the proportion. Isolate the variable.

  4. Jenny flipped a coin 500 times and got heads 245 and tails 255. What was the experimental probability of getting heads? P(heads) = 245 or 49% 500 How does her experimental probability compare to the theoretical (what should happen)?

  5. Odds - The favorable outcomes compared to the unfavorable outcomes (different than the probability) What is the probability of rolling a 1 on a die? P(1) = 1/6 What are the odds of rolling a 1 on a die? O(1) = 1/ 5

  6. Homework • Period 1, 5-->9-6- page 395 #3-5, page 396 #22-29 • Period 2,6,7-->9-6 page 395 #10-12, page 396 #22-29

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