Expected Value of a Random Variable | |
Summary |
a probability distribution can have a mean or average value. this value is known as the expected value or the expectation. the symbol for the expected value of a distribution of x is written e(x) or μ . to find the expected value, e(x) of a probability distribution each value of x is multiplied by its probability and the results are added together. |
Key Skills |
calculate the expected value of a probability distribution given a table of probabilities. |
Vocabulary |