FN Sensitivity Abbreviation

False Negative

A false negative error, or in short false negative, is where a test result indicates that a condition failed, while it actually was successful. I.e. erroneously no effect has been assumed. A common example is a guilty prisoner freed from jail. The condition: "Is the prisoner guilty?" actually had a positive result (yes, he is guilty). But the test failed to realize this, and wrongly decided the prisoner was not guilty.A false negative error is a type II error occurring in test steps where a single condition is checked for and the result can either be positive or negative.