True and False Negatives Instructions:Number of questions: 10Time limit: 20 minutesMust be finished in one sitting. You cannot save and finish later.Questions displayed per page: 1Will allow you to go back and change your answers.Will not let you finish with any questions unattempted. 1 / 10 What is the definition of a true negative? (e.g., is a smoke alarm silent because there is no smoke?) An outcome where the model incorrectly predicts the positive class An outcome where the model incorrectly predicts the negative class An outcome where the model correctly predicts the positive class An outcome where the model correctly predicts the negative class 2 / 10 What is the definition of a false negative? (e.g., is a smoke alarm silent even when there's smoke?) An outcome where the model incorrectly predicts the positive class An outcome where the model incorrectly predicts the negative class An outcome where the model correctly predicts the positive class An outcome where the model correctly predicts the negative class 3 / 10 What's a synonym for a true negative? No alarm Failed alarm Alarm False alarm 4 / 10 What's a synonym for a false negative? No alarm Failed alarm Alarm False alarm 5 / 10 A security alarm remains silent in the middle of the night when it detects a window being broken. This is an example of a: True Positive True Negative False Positive False Negative 6 / 10 A security alarm remains silent when no thief is opening the window. This is an example of: True Positive True Negative False Positive False Negative 7 / 10 A company is testing a new smoke detector. As we can see the test result below, what is the ratio of true negatives to false negatives (True Negative:False Negative)? True Negative : False Negative = 99 : 1 True Negative : False Negative = 1 : 99 True Negative : False Negative = 99 : 98 True Negative : False Negative = 1 : 2 8 / 10 A user is trying to unlock his laptop with the fingerprint scanning function. When is it a false negative? The laptop remained locked even after scanning his fingerprint The laptop remained locked after scanning someone else’s fingerprint The laptop was unlocked after scanning his fingerprint The laptop was unlocked after scanning someone else’s fingerprint 9 / 10 A user is trying to unlock his phone with his face. When is it a true negative? The laptop remained locked even after scanning his fingerprint The laptop remained locked after scanning someone else’s fingerprint The laptop was unlocked after scanning his fingerprint The laptop was unlocked after scanning someone else’s fingerprint 10 / 10 Driving a vehicle with Autopilot technology on the road, an automated emergency braking (AEB) system could detect a pedestrian crossing the car’s path. The table below shows a set of test records. How many true and false negatives did they find? True Negative = 995 and False Negative = 9999 True Negative = 5 and False Negative = 1 True Negative = 995 and False Negative = 5 True Negative = 9999 and False Negative = 1 Your score is 0% Restart quiz
