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Statistics and Probability Part 2

Statistics and Probability Part 2. · Theoretical Probability ·Experimental Probability ·More than 1 Pull ·Odds ·Probability with Area Models. Theoretical and Experimental Probability.

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Statistics and Probability Part 2

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  1. Statistics and Probability Part 2 ·Theoretical Probability ·Experimental Probability ·More than 1 Pull ·Odds ·Probability with Area Models

  2. Theoretical and Experimental Probability

  3. Probability are the chances that an event could happen. Probability can be written as a percent or a fraction. For example, the probability of picking a yellow?

  4. Theoretical Probability The mathematical chance and event will happen over a long period of time. You know the chances of flipping heads or tails is 50%. However if you only flip 10 times you may get more heads than tail. Theoretical probability is for long periods. Flipping the coin 100 times will get you closer to the 50% chance. # possible TheoP = total #

  5. With your partner flip your coin 10 times and record the %heads and %tails. Then flip your coin 100 times and record the %heads and %tails. Which trial was closest to your theoretical probability of 50%? * take turns flipping and recording

  6. Experimental Probability The chance an event happens during an actual experiment. # of color picked ExpP = Picked 2 Turquoise 3 Purple 5 Red 0 Green total picks It doesn't matter how many of each color are in the jar for experimental probability. It matters what colors are picked out.

  7. # possible TheoP = total # # of color picked ExpP = total picks * Theoretical and Experimental probabilities do not always match. Human error.

  8. Do NOT look in your bag. At random, choose and replace 10 times. Record your outcomes and determine the probability using your outcomes. What type of probability is this? Now open your bag and determine the probability of choosing each color. What type of probability is this?

  9. Using theoretical probability for predictions. is % 12.5% = Gym of 100 Science 12.5% English 25% Out of 250 students in the school, how many students like... Math? Science? Gym? Social S. Math 17% 33%

  10. Check You Out... If this table describes the theoretical probability, if you pick from the bag 270 times, how many times would you expect to pick... P(green) = P(yellow) = P(red) = P(orange) = * What is the probability of picking any OTHER color?

  11. More than 1 Pull

  12. There are times when you WANT more than 1 outcome. For example, if I flip a quarter twice, I WANT to get heads the first time and heads the second time. To measure the probability of getting heads BOTH times. I simply multiply the probabilities.

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