The accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantity’s actual (true) value. Accuracy is also used as a statistical measure of how well a binary classification test correctly identifies or excludes a condition. The accuracy is the proportion of true results (both true positives and true negatives) in the population.

Related formulas


ACCAccuracy (dimensionless)
TPNumber of True Positives (correctly identified) (dimensionless)
TNNumber of True Negatives (correctly rejected) (dimensionless)
FPNumber of False Positive (incorrectly identified) (dimensionless)
FNNumber of False Negatives ( incorrectly rejected) (dimensionless)