Statistical Test Guide

Follow the 5-step framework to find the right statistical test for your data.

Step 1 of 5 · Data Type

Data Type

Research Goal

Assumptions

Select Test

Survival Check

Step 1: Data Type

What type of data are you working with?

Quantitative (continuous) data is measured on interval or ratio scales — e.g. blood pressure, weight, or age. Qualitative (categorical) data falls into distinct groups — e.g. blood type, disease diagnosis, or pain severity rating.

The content in this guide is drawn from multiple books and peer-reviewed academic references in medical statistics and biostatistics, including works by Field, Hosmer & Lemeshow, Kaplan & Meier, and Cox. This tool is intended for educational purposes and does not replace consultation with a qualified statistician.