11.3 Vocabulary terms

Also other names for the same term, and formulas.

  • True positive (\(n_{11}\))

  • True negative (\(n_{22}\))

  • False positive, Type I error (\(n_{12}\))

  • False negative, Type II error (\(n_{21}\))

  • True positive rate (TPR), Recall, Sensitivity, probability of detection, power. \(\frac{\# True Positive}{\#Condition Positive}\)

  • False positive rate (FPR), fall-out, probability of false alarm. \(\frac{\# False Positive}{\# Condition Negative}\)

  • False negative rate (FNR), miss rate. \(\frac{\# False Negative}{\# Condition Positive}\)

  • True negative rate (TNR), Specificity, selectivity. \(\frac{\# True Negative}{\# Condition Negative}\)

  • Prevalence. \(\frac{\# Condition Positive}{\# Total Population}\)

  • Accuracy. \(\frac{\# True Positive + \# True Negative}{\# Total Population}\)

  • Positive Predictive Value (PPV), Precision. \(\frac{\# True Positive}{\# Predicted Condition Positive}\)

  • False discovery rate (FDR). \(\frac{\# False Positive}{\# Predicted Condition Positive}\)

  • False omission rate (FOR). \(\frac{\# False Negative}{\# Predicted Condition Negative}\)

  • Negative predictive value (NPV). \(\frac{\# True Negative}{\# Predicted Condition Negative}\)

  • F1 score. \(\frac{2 * (Precision * Recall)}{Precision + Recall}\)