expectation

Expectation, in probability and statistics, refers to the average or long-term value you can anticipate from a random event if you were to repeat it many times. It’s like the weighted average of all possible outcomes, where each outcome is multiplied by its likelihood. For example, the expectation of a fair six-sided die roll is 3.5, meaning over many rolls, the average result tends toward 3.5. Expectation helps in understanding the overall tendency or average outcome of uncertain events, guiding decisions and predictions in various fields.