HRR (Hardy-Rand-Ritter) Test

The Hardy-Rand-Ritter (HRR) test is a statistical method used to evaluate how well a test or measurement tool can distinguish between individuals with and without a certain condition or trait. It assesses the test’s ability to consistently differentiate groups, providing a measure called "discriminatory power." Think of it as a way to verify if a test reliably identifies differences among individuals. This helps ensure that the test is effective for screening or diagnosis purposes. The HRR test is useful in research and clinical settings to validate the accuracy of diagnostic tools.