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A random variable must assign a value to the different outcomes like heads, tails or colors. That value is the random variable value. For a random variable we
by kazinator 2y ago
A random variable must assign a value to the different outcomes like heads, tails or colors. That value is the random variable value.
For a random variable we can calculate something called the expected value. We can't do that if the value of the variable is in the domain { red, green, blue }.
- eru 2y agoExpected values are a completely separate topic, and should not be confused with random variables. Not all probability distributions over real numbers have expected values. See https://en.wikipedia.org/wiki/Cauchy_distribution https://en.wikipedia.org/wiki/Cauchy_distribution Many probability distributions over something other than the real numbers have expected values.