Biostatistics and epidemiology
Choosing a statistical test: parametric and non-parametric tests
Matching a test to the outcome type, the number of groups, pairing and the shape of the data, with a worked chi-squared calculation and the parametric and non-parametric pairs.
Tier 1Medical sciences concept
Written with AI assistance and fact-checked against the sources below. For exam study, not clinical decisions. How notes are made
At a glance
Four questions pick almost every test:
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Sources
- Practical Statistics for Medical ResearchChapman and Hall (Altman, 1991), 1991
- Essential Medical Statistics (2nd ed.)Blackwell (Kirkwood and Sterne, 2003), 2003
- Statistical methods for assessing agreement between two methods of clinical measurementLancet (Bland and Altman, 1986;327:307-10), 1986
- Statistics notes: Multiple significance tests: the Bonferroni methodBMJ (Bland and Altman, 1995;310:170), 1995
- Kim HY. Statistical notes for clinical researchers: chi-squared test and Fisher's exact test. Restor Dent Endod 2017;42:152-5Restorative Dentistry and Endodontics, 2017
- Last updated
- 14 November 2026
What changed
- 14 November 2026 Personal emails, About story and Australian-style copy