We can use a Chi-Square test to check if proportions are equal across several groups of data. The example here is of the proportion of enlisted men and women in the US armed forces. Does the proportion of men and women in the US armed forces differ by service?
The data is obtained from the Statisticbrain website and can be found at http://www.statisticbrain.com/demographics-of-active-duty-u-s-military/.
The following steps will compare the proportion of enlisted male and female personnel in the US armed services using a Chi-Square test:
Go to the Stat menu, click on Tables, and select Cross Tabulation and Chi-Square.
Enter Service in the field For rows: column.
Enter Gender in the field For columns: column.
Enter Enlisted in the field Frequencies are in: column.
Select the Chi-Square… button.
Check the options for Chi-square test, Expected cell counts, and Each...