A21­6Notes.notebook
September 16, 2010
Algebra 2
Ch.1 Notes Page 20
P20 1­6 Probability
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Probability
What are the chances that some event will occur.
Probability (Event) = Favorable Outcomes
Total Outcomes
Example: Rolling an Even Number on a Number Cube
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A21­6Notes.notebook
September 16, 2010
Experimental Probability
What does happen when you do the experiment.
Number Favorable Outcomes
Total Experiments
(If you toss the coin 100 times, you might get 60 heads and 40 tails.)
Flipping a Coin (Results = H, T, H, T, H)
Rolling a Die (Result = 1,3,4,5,5,5,5,6)
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Theoretical Probability
What should happen if the experiment is done over and over again.
Favorable Outcomes
Total Outcomes
Tossing a coin.
(Should be 50% Heads and 50% Tails)
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A21­6Notes.notebook
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Sample Space
Sample Space ­ The set of all possible outcomes
All Outcomes
Specific Event
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Geometric Probability
Geometric Probability ­ Uses Areas/Lengths/Time to find Probability
P(At Least 10)
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A21­6Notes.notebook
September 16, 2010
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Simulation
Simulation ­ Model of some event that is difficult to perform.
P651
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A21­6Notes.notebook
September 16, 2010
Random Number Generator
Graphing Calculator
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