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