High Precision
Selected items are very likely correct,
but we missed many relevant items.
Precision = 3 / (3 + 0) = 1.00
Recall = 3 / (3 + 4) = 0.43
High Recall
We found all relevant items,
but included many incorrect ones.
Precision = 7 / (7 + 6) = 0.54
Recall = 7 / (7 + 0) = 1.00