Test of Two Proportions

The Test of Two Proportions is used to determine whether a difference between two groups is statistically significant. This is a common statistical test used in A/B testing.

This calculator is a two step calculator. First, select the type of data you have available. You are required to know the total sample size for the denominator, but can choose between the number or the proportion/percentage of the sample for the numerator. The second step is to enter the data.

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Test of Two Proportions Calculator

Determine statistical significance between two proportions (two-tailed test).

Step 1. Please select the data type.To calculate the test, you need to have the total number of respondents for each of the samples (the two denominators) and one of the following: a. the number of respondents in the numerator OR b. the percentage of respondents

Please make a selection. Number of respondents Proportion of respondents (percentage)

Calculation Results

Sample 1 Proportion:

Sample 2 Proportion:

Value of z:

Test Results

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