Chi-Square Test of Independence
The Chi-Square test of independence is used to see whether two nominal (categorical) variables
have a significant relationship (Quessy, Rivest & Toupin, 2019). The researcher wants to look
into the relationship between Country by region and Infrastructure by index. This relationship
can be investigated using the chi-square test of freedom. From the Afrobarometer data set, the
research question for the study is; is country by region related to infrastructure by index? The
study hypothesis was; H1 : There is a relationship between Country by region and Infrastructure
by index. Ho : There is no relationship between Country by region and Infrastructure by index.
Descriptive design was adopted for this study.
Results
Chi-Square Tests
Value df
Asymptotic
Significance (2-
sided)
Pearson Chi-Square 465.918a45 .000
Likelihood Ratio 415.699 45 .000
Linear-by-Linear Association .642 1 .423
N of Valid Cases 8392
a. 0 cells (0.0%) have expected count less than 5. The minimum
expected count is 8.12.
The Chi-Square test results shows that there is a strong relationship between Country by region
and Infrastructure by index. This is supported by a P-value that is below .05. Therefore, we reject
the null hypothesis that there is no relationship between Country by region and Infrastructure by
index.
Symmetric Measures
Value
Approximate
Significance
Nominal by Nominal Phi .236 .000
Cramer's V .136 .000
N of Valid Cases 8392
There is a strong association between independent and dependent variables. The Cramer's V and
Phi values are below 1 thus showing a perfect association (Frankfort-Nachmias, & Leon-
Guerrero, 2018).
References
Frankfort-Nachmias, C., & Leon-Guerrero, A. (2018). Social statistics for a diverse society (8th
ed.). Thousand Oaks, CA: Sage Publications.
Quessy J-F, Rivest L-P, Toupin M-H. (2019). Goodness-of-fit tests for the family of multivariate
chi-square copulas. Computational Statistics and Data Analysis. January 2019.
doi:10.1016/j.csda.2019.04.008.
Wagner, III, W. E. (2020). Using IBM® SPSS® statistics for research methods and social
science statistics (7th ed.). Thousand Oaks, CA: Sage Publications