In the Contingency platform, you can construct a confidence interval and perform a hypothesis test for the difference between two proportions. This analysis is available when both the X and Y variables have exactly two levels. See Example of a Two Sample Test for Proportions.
Description
The description of the test being performed.
Proportion Difference
The difference in the proportions between the levels of the X variable.
Lower 95%
The lower endpoint of the confidence interval for the difference. This value is based on the adjusted Wald confidence interval.
Upper 95%
The upper endpoint of the confidence interval for the difference. This value is based on the adjusted Wald confidence interval.
Adjusted Wald Test (Null Hypothesis)
The description of the null hypotheses for the one-tailed and two-tailed tests.
Prob
The significance probabilities (p-values) for the tests.
Tip: Use the radio buttons below the table to change the response level of interest for the test.