1. Glencoe Course 3 Lesson 8-6

4. KWL Chart Know about Experimental Probability What Like Know about Experimental Probability Learned about Experimental Probability

5. Spinner Activity Label each section with a student name Spin the spinner record the results What is the probability of spinning each group member. Repeat for 25, 50 and 100 trials. Student Name Student Name Student Name Student Name

6. Things to Think About What is the meaning of the Latin root words experiment, experience and expert. What do you think experimental probability means?

7. Probability Experimental Probability- probabilities based on frequencies obtained by conducting an experiment Theoretical Probability- probabilities based on known characteristics or facts

8. Experimental Probability

14. Venn Diagram Theoretical Probability Experimental Probability

15. Probability Quiz 1) John is conducting an experiment to find the probability of getting either 1-6 on a number cube and heads or tails on a coin toss. The results of her experiment are given at the right. According to the experimental probability, is John more likely to get a H4 or a T4 on the next roll and toss? 2) How many possible outcomes are there for a number cube and a coin? 3) What is the theoretical probability of getting heads and a 4?

16. Quiz 4) Four hundred shoppers at the mall were asked whether they purchased greeting cards or wrapping paper in the last year. Of these, 300 purchased greeting cards and 150 purchased wrapping paper. What is the experimental probability that a shopper at the mall purchased wrapping paper in the last year? 5) Over the last 5 years, the probability that pumpkin seeds planted by Elizabeth produced pumpkins is ¾. Is this probability experimental or theoretical? Explain. 6) Over the last 5 years, the probability that pumpkin seeds planted by Elizabeth produced pumpkins is ¾. If Elizabeth wants to have 60 pumpkin-bearing plants, how many seeds should she plant?