2x2 Contingency Table Chi Square Test. Only choose chi square if someone requires you to. When the row and column margins in 2 x 2 contingency table are fixed either by design or for the analysis independence of attributes can be tested using fisher s exact test.
For a table of frequency data cross classified according to two categorical variables x and y each of which has two levels or subcategories this page will calculate the phi coefficient of association. The contingency chi square is based on the same principles as the simple chi square analysis in which we examine the expected vs. When the row and column margins in 2 x 2 contingency table are fixed either by design or for the analysis independence of attributes can be tested using fisher s exact test.
This simple chi square calculator tests for association between two categorical variables for example sex males and females and smoking habit smoker and non smoker.
Only choose chi square if someone requires you to. For a table of frequency data cross classified according to two categorical variables x and y each of which has two levels or subcategories this page will calculate the phi coefficient of association. Fisher s test is the best choice as it always gives the exact p value while the chi square test only calculates an approximate p value. Chi square calculator for 2x2.
