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Chapter 5 · Data Analysis: A Concise Overview of Statistical Techniques · Slide 202/274

Testing the Strength of a Relationship

χ² tests only the significance of a relationship and says nothing about its strength.

5.2.2 · Strength of a RelationshipOverview

Testing the Strength of a Relationship

χ² tests only the significance of a relationship and says nothing about its strength.

Simple proof: doubling all the values in the cross-tabulation doubles χ² — but the relationship itself stays the same.

Measures of the strength of a relationship are:
φ
Phi Coefficient
C
Contingency Coefficient
V
Cramer's V
λ
Lambda Coefficient
QUESTIONSTAR · Dr. Paul Marx202 / 274
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