Chi- Square test | MDS entrance preaparations

Chi- Square test is used to measure the degree of:
A. Causal relationships between exposure and effect.
B. Association between two variables.
C. Correlation between two variables
D. Agreement between two observations.

     Ans. (B) Association between two variables: 

-   The chi-square test is used to measure the qualitative data not quantitative data.

-  The test of association between two events is the most important application of the chisquare test is statistical method.

-   It measures the probability of association between two discrete attributes

- The chi-square test assumes that no association occurs between two events in question unless proved otherwise – Null Hypothesis