Research Tool

Statistical Test Selector

Answer a few questions about your design to get a recommended statistical test, an APA-style reporting template, an assumptions checklist, an effect-size benchmark, and the non-parametric alternative. The decision tree is deterministic and follows the standard teaching flow (Field, 2018) — nothing is stored, and no AI is involved.

Your design

Only the questions relevant to your chosen path are required — submit any time and the tool will name the next question it needs.

1. What is your research question about?
2. Measurement level of the outcome variable

For an association question, this is the level of both variables.

3. How many groups or conditions? (difference questions)
4. Are the groups independent or paired? (difference questions with 2+ groups)
5. How many predictors? (prediction questions)
Clear