olemus
puudumise nentimine tegelikul olemasolul

Wikipedia:
The second kind of error is the mistaken acceptance of the null hypothesis as the result of a test procedure. This sort of error is called a type II error (false negative) and is also referred to as an error of the second kind.
In terms of the courtroom example, a type II error corresponds to acquitting a criminal

https://en.wikipedia.org/wiki/Type_I_and_type_II_errors

näiteid
- statistilisel hüpoteeside kontrollimisel:
väär otsus, et tuvastati otsitava nähtuse puudumine
- biomeetrias vms kontekstis: = väär eitus

vt ka
- esimest liiki viga