Which statement best describes the difference between parametric and nonparametric tests?

Which statement best describes the difference between parametric and nonparametric tests?

• A. Parametric tests assume distributional form (e.g., normal); nonparametric tests make fewer assumptions and use ranks or counts.
• B. Parametric tests use ranks; nonparametric tests require distributional assumptions.
• C. Parametric tests are always nonparametric; it's the same.
• D. Parametric tests are nonparametric but for large samples only.

Answer: (A)