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One-way Chi-squared test

Number of categories:
Category 1:  
Category 2:  


The one-way Chi-squared test allows to test the statistical significance of differences in a one-way classification system.

Required input

First, select the number of different categories.

Next, enter the number of cases for each category.


The results section contains the Chi-squared value, the Degrees of Freedom and associated P-value.

If the calculated P-value is small (<0.05), then there is a significant difference between the frequencies of the different categories.

How to cite this page

  • MedCalc Software Ltd. One-way Chi-squared test. (Version 22.030; accessed July 16, 2024)