3 ms·
Erm, let's say 10% of the people on whom drug dogs are called have drugs. Then for 1000 stopped, you'll have 0.59 * 0.1 * 1000 = 59 true positives and ... 0.
by okasaki 11y ago
Erm, let's say 10% of the people on whom drug dogs are called have drugs.
Then for 1000 stopped, you'll have
0.59 * 0.1 * 1000 = 59 true positives and ...
0.34 * 0.9 * 1000 = 306 false positives.
That's pretty terrible.
- harryh 11y agoYour math is wrong. The article indicates that of all the people the dog indicated had drugs 59% of them actually did. So for 1000 people whom drug dogs are called on 930 the dog indicated had drugs. Of those 549 were correct and 381 were false positives.