459 B
459 B
| id | title | type | created | modified | tags |
|---|---|---|---|---|---|
| 20260114133159 | Expected Value | permanent | 2026-01-14T18:31:59Z | 2026-01-14T18:41:57Z |
Expected Value
Expected value is pretty much the mean of a function, but more specifically, it's the weighted average of all possible outcomes of a function:
\hat X = E{X}
If we have an estimate of a posterior using [[Bayes' Theorem]], we can get the following result:
\hat X = \sum_i X^i \hat{Pr}(X^i|Y)