Relationships · Method bridge
Choosing a Two-Group Comparison
Are you comparing means, paired changes, or relative positions?
Page 1 of 7 · Big Picture
The big picture: Choosing a Two-Group Comparison
Are you comparing means, paired changes, or relative positions?
Why a policy analyst should care
Means, paired changes, medians, and ranks target different features of two groups, so the scientific question and data structure must precede the test.
Follow the idea from the opening question to a practical decision. These are the conceptual moves this module will develop:
1 Question What are you trying to compare?
2 Explore Match the estimand and data structure
3 Formalize Different tests, different hypotheses
4 Transfer Defend a starting approach
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