The NIAID Stats Calculator is provided by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH). The calculator performs quick sanity checks when exploring experimental results data using either the Student's t-test or the Fisher's exact test for two categories. Instead of requiring the user to input large sets of raw data, the NIAID Stats Calculator is designed to run the tests using the mean, standard deviation, and sample size of the groups.