Enter the number of false discoveries and the number of tests performed into the False Discovery Rate Calculator. The calculator will evaluate the False Discovery Rate.

## False Discovery Rate Formula

The following two example problems outline the steps and information needed to calculate the False Discovery Rate.

**FDR = #FD / #T *100**

- Where FDR is the False Discovery Rate (%)
- #FD is the number of false discoveries
- #T is the number of tests performed

## How to Calculate False Discovery Rate?

The following example problems outline how to calculate False Discovery Rate.

Example Problem #1:

- First, determine the number of false discoveries.
- The number of false discoveries is given as: 40.

- Next, determine the number of tests performed.
- The number of tests performed is provided as: 500.

- Finally, calculate the False Discovery Rate using the equation above:

FDR = #FD / #T *100

The values provided above are inserted into the equation below and computed.

FDR = 40 / 500 *100 = 8.00 (%)

Example Problem #2:** **

For this problem, the variables required are provided below:

number of false discoveries = 20

number of tests performed = 600

Test your knowledge using the equation and check your answer with the calculator..

FDR = #FD / #T *100** = ?**