Calculating Expected Value
12th Grade · Math · 60 min
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Learning Objective
I can calculate the expected value of a random variable.
- 1
A discrete random variable has a finite number of values, and a valid probability distribution has a combined probability of one.
- 2
The expected value of a discrete random variable is the weighted sum of the various outcomes, weighted by their probabilities.
- 3
The expected value, or mean, of a random variable can be a non-integer value even if the random variable only takes on integer values.
