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Theoretical and Experimental Coin Tosses

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Theoretical and Experimental Probability
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Basketball and Theoretical and Experimental Probability

Topic

Basketball and Theoretical and Experimental Probability

Vocabulary

  • Theoretical Probability
  • Experimental Probability

Student Exploration

What is the theoretical and experimental probability that you will make a 3-point basket in basketball? And how are they different?

A basketball hoop.

What is the difference between theoretical and experimental probability? This is an activity where you can explore the difference between theoretical and experimental probability. You just learned that theoretical probability is a ratio expressing the number of successful outcomes compared to the total outcomes in an experiment. Right now, make an estimate of the theoretical probability of you making a 3-pointer in basketball. A 3-pointer is a field goal shot made in a basketball game beyond the 3-point arc on a basketball court.

http://www.ihoops.com/practice-time/shooting/Fundamentals-of-the-3-Point-Shot.htm

In order to determine your theoretical probability of making a 3-pointer in basketball, estimate how many 3-point shots you would accurately make out of 10 shots. Then set up that ratio as a fraction, and reduce it.

1. What is the theoretical probability of you making a 3-pointer? Show your work.

Now go find the basketball court that is closest to you! Go outside to that basketball court and shot ten 3-pointer shots (shots beyond the 3-point arc) and record how many baskets you make. This is your experimental probability! Set up a ratio of the number of 3-point shots that you made compared to 10, the total number of trails in your experiment. Set up that ratio as a fraction, and reduce it.

2. What is the experimental probability of you making a 3-pointer? Show your work.
3. Compare your theoretical and experimental probability of making a 3-pointer. How are they different? How are they similar? Explain.
4. If you were to compare this same experiment but take 20 shots, how would your results change? Explain.

A basketball player.

5. Now, compare your experimental probability to that of your favorite basketball player at the website below. If you don’t know any famous basketball players check out Kevin Durant and Lebron James, these were two of the top players in the 2012 NBA play-offs.Explain what you find.

http://www.nba.com/statistics/player/Scoring.jsp

Extension Investigation

These are some follow-up questions to the activity above.

  1. Does experimental probability get closer or further away from the theoretical probability as you do more trails? Explain.
  2. What can you infer about a situation when the experimental probability is very different from the theoretical probability? Explain.

Resources Cited

http://www.ihoops.com/practice-time/shooting/Fundamentals-of-the-3-Point-Shot.htm

http://www.nba.com/statistics/player/Scoring.jsp

Connections to other CK-12 Subject Areas

  • Probability and Permutations
  • Theoretical and Experimental Spinners
  • Theoretical and Experimental Coin Tosses

Images from:

http://pixabay.com/en/black-silhouette-white-cartoon-33205/

http://pixabay.com/en/black-outline-symbol-drawing-31353/

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