| Probability Distribution | 
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 A probability distribution displays the probabilities associated with all possible outcomes of an event.  | 
Here's a probability distribution for one roll of a six-sided die:
 
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Figure 1. | 
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As you can see, every event has an equal chance of occuring.
| Probability Histogram | 
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 A probability histogram is a histogram with possible values on the x axis, and probabilities on the y axis.  | 
Here's a made-up probability distribution(left) with its probability histogram(right):
 
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Figure 2. | 
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