$Precision = \frac{NumberOfCorrectResults}{WholeNumberOfResults} = \frac{TP}{TP + FP} = Selectivity$,

x

$Recall = \frac{NumberOfCorrectResults}{WholeNumberOfCorrectItems} = \frac{TP}{TP + FN} = Sensitivity$

x

$Specificity = \frac{TN}{TN + FP}$