Properties3
| Type | Concept |
| Note created | Feb 17, 2025 |
| Last updated | Mar 11, 2026 |
Nonparametric statistics is the branch of statistics that is not solely based on parametrized families of probability distributions. It is based on either being distribution-free or having a specified distribution but with unknown distribution parameters. Nonparametric tests are often used once the assumptions of parametric tests are violated.