← Every exhibit
Distribution matters before the mean
| Set | Signed errors | Mean signed error | Mean absolute error | Shape |
|---|---|---|---|---|
| A | -20, +20, -20, +20 | 0 | 20 | Repeated moderate miss |
| B | -40, 0, 0, +40 | 0 | 20 | Two exact periods and two larger misses |
Swipe or scroll horizontally if the table is wider than your screen.
Reference & Evidence
Source: Table from this essay. Sources and interpretation are given in the article.