Glossary

Type Two Error

A type two error occurs when the null hypothesis is false but erroneously fails to be rejected. It is failing to assert what is a miss. It could be compared with a false negative in a test that was checking for a single condition. The goal of the test is to decide if the null hypothesis can be rejected. Type II errors occur when the test does not detect a bug or other problem. Type II errors can also be called false negatives.