110_lec15_Probability

110_lec15_Probability - Probability Chance behavior is...

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Probability Chance behavior is unpredictable in the short run but has a regular and predictable pattern in the long run.
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How can we establish probabilities? Method 1: Relative frequency – repeat an experiment many times and calculate proportion of time each outcome occurs. This is also called experimental or empirical probability. Method 2: Theoretical – if we know all events are equally likely, we can calculate probability based on theory.
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Let’s Toss a Fair Coin
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Probability An event is random if individual outcomes are uncertain but there is a regular distribution of outcomes in a large number of repetitions. The probability of any outcome of a random event is a number between 0 and 1 that describes the proportion of times the outcome would occur in a very long series of repetitions.
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What is the probability of rolling a 2 on a die? What is the probability of rolling a 6 on a die? Which pattern is more likely if you roll a
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110_lec15_Probability - Probability Chance behavior is...

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