Enter the number of false positives and the number of tests into the False Positive Rate Calculator. The calculator will evaluate the False Positive Rate.
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False Positive Rate Formula
The following two example problems outline the steps and information needed to calculate the False Positive Rate.
FPR = FP / #T * 100
- Where FPR is the False Positive Rate (%)
- FR is the number of false positives
- #T is the number of tests
How to Calculate False Positive Rate?
The following example problems outline how to calculate False Positive Rate.
Example Problem #1:
- First, determine the number of false positives.
- The number of false positives is given as: 50.
- Next, determine the number of tests.
- The number of tests is provided as: 150.
- Finally, calculate the False Positive Rate using the equation above:
FPR = FP / #T * 100
The values provided above are inserted into the equation below and computed.
FPR = 50 / 150 * 100 = 33.33 (%)
Example Problem #2:
For this problem, the variables required are provided below:
number of false positives = 60
number of tests = 180
Test your knowledge using the equation and check your answer with the calculator..
FPR = FP / #T * 100 = ?
