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What do you think would happen to the average if you kept rolling the number cube over and over?
What is the probability of rolling a 3?
1/6
Each possible outcome of the number cube has the same theoretical probability. What is that probability?
You may have noticed that the average is approaching a specific value. What value is the average approaching? (To convince yourself, you may want to roll the number cube a little more.)
3.5
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Properties of Probability Distributions
Introduction to Normal Distributions