Marketing Research and Insight Glossary

Definitions, common uses and explanations of 1,500+ key market research terms and phrases.

What is a Chi-Square Test?

Research Topics:
Data Analysis | Modeling/Simulation Studies
Content Type:
Glossary
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Chi-Square Test Definition

A test of statistical significance which tests one measure of how well your model of expected distribution fits the observed distribution.

A Chi-square test is a test of statistical significance that determines the association or independence between categorical variables. It assesses whether the observed distribution of data differs from the expected distribution. In other words, it tests how well a model of expected distribution fits with what is observed. Researchers conduct the test to identify patterns, trends or relationships within data, thus providing a quantitative framework to validate or invalidate hypotheses about categorical data relationships. Test findings allow marketing professionals to avoid making decisions based on assumptions or anecdotal evidence. Chi-squares can produce statistically sound insights that can be used to improve customer engagement, boost sales and improve the overall effectiveness of marketing campaigns.

Who relies on chi-square tests?

A chi-square test is particularly valuable to marketing researchers, analysts and professionals when they examine the relationships between categorical variables, such as product preferences based on demographics, purchase intent across different regions or the effectiveness of marketing strategies across customer segments.

Why should I care about chi-square tests?

Utilizing chi-square tests can uncover significant marketing insights. Findings from this statistical test can help marketing professionals design marketing strategies to specific target audiences, optimize product offerings, refine messaging and allocate resources more effectively.