False Positive Rate Calculator

Formula

The formula to calculate the False Positive Rate is:

\[ FPR = \frac{FP}{T} \times 100 \]

Where:

\(FPR\) is the False Positive Rate (%)
\(FP\) is the Number of False Positives
\(T\) is the Number of Tests

What is False Positive Rate?

The False Positive Rate (FPR) is a measure used to determine the proportion of false positives among the total number of tests. It is expressed as a percentage and indicates the likelihood of a test incorrectly indicating the presence of a condition when it is not actually present. This metric is important in evaluating the performance of diagnostic tests and screening processes.

Example Calculation

Let's assume the following values:

Number of False Positives (FP) = 10
Number of Tests (T) = 1000

Using the formula:

\[ FPR = \frac{10}{1000} \times 100 = 1\% \]

The False Positive Rate (FPR) is 1%.