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2.20.08 Probability Distributions

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2.20.08 Probability Distributions

  1. 1. Probability Distributions When we roll a pair of dice, there are 36 possible permutations of the numbers 1-6, and 11 possible sums. A probability distribution is a function with the event as the independent variable and the probability as the dependent variable. 1/36 12 2/36 11 3/36 10 4/36 9 5/36 8 6/36 7 5/36 6 4/36 5 3/36 4 2/36 3 1/36 2 P(x) x
  2. 2. How accurate are these probabilities? <ul><li>50 rolls per group </li></ul><ul><li>“Frequency” refers to the total count for each sum after 50 rolls </li></ul><ul><li>The % column refers to the percentage of rolls that had that sum, and should be close to the probability for that sum. </li></ul>

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