- Purdue Libraries
- Library Guides
- Foundations of Research and Evidence-Based Practice
- Statistical Resources

Statistics intro: Mean, Median, and Mode (Khan Academy)

p value explained (Educate Virtually)

Hypothesis testing and p-values (Khan Academy)

One-tailed and two-tailed tests (Khan Academy)

Confidence interval 1 (Khan Academy)

Relative risk, relative and absolute risk reduction, number needed to treat and confidence intervals

- A short article about relative risk (RR), absolute risk reduction (ARR), and relative risk reduction (RRR)

Understanding Hazard Ratio

- A short PPT from Epiphany Partners Inc.

What are hazard ratios?

- A short article about hazard ratio with examples (author: Martin Duerden).

Glossary index, re: odds and odds ratio

- See the definition of research terms (e.g., odds and odds ratios) with link to examples in this webpage.

Common mistakes in using statistics

- Click the links in this webpage to see each topic. Follow the link to view specific topic. Scroll down to view "Suggestions for reading research involving statistics"

Exploratory Factor Analysis

- A text-based presentation about exploratory factor analysis (EFA)