Answer the question.
-Any test for a disease has a certain rate of false positives (percentage of those who don't have the disease who test positive)and a certain rate of false negatives (percentage of those who do have the
Disease who test negative).
You would like to determine the chance that a person has the disease given that they have tested
Positive for the disease. Which of the following will you need to know?
A)The rate of false positives, the incidence of the disease
B)The rate of false positives, the rate of false negatives, the incidence of the disease
C)The rate of false positives, the rate of false negatives, the incidence of the disease, the number of people being tested
D)The rate of false positives, the rate of false negatives

Question

Quizplus · Accepted Answer

To determine the chance that a person has the disease given they tested positive, you need the rate of false positives (to know how often the test incorrectly indicates disease), the rate of false negatives (to understand how often the test misses the disease), and the incidence of the disease in the population (to know the baseline rate of the disease). These factors together allow for the calculation of the probability of having the disease after a positive test result, using Bayes' theorem.

Answer the Question. -Any Test for a Disease Has a Certain Rate of Certain