Spésifisitas

In binary testing, e.g. a medical diagnostic test for a certain disease, specificity is the proportion of true negatives of all the negative samples tested, that is

${\rm {specificity}}={\frac {\rm {number\ of\ true\ negatives}}{{\rm {number\ of\ true\ negatives}}+{\rm {number\ of\ false\ positives}}}}.$

See

• binary classification
• receiver operating characteristic
• sensitivity (tests)
• statistical significance
• Type I error