Significant Difference Calculator

This calculator is designed to allow you to test the results from two groups and identify if the differences are statistically significant. For example, if 85% of 450 respondents in the west are satisfied with customer service and 80% of 300 respondents in the central region are satisfied with your service, is that difference real or what you would expect through random chance?

To determine if a difference is significant, follow these steps:

1. Enter the number of respondents from Group 1 providing information to Question X in the "N1" box. Enter the percent of those respondents providing a particular answer (Yes, Satisfied, Hispanic, etc.) in the "P1" box.
2. Enter the number of respondents from Group 2 providing information to Question X in the "N2" box. Enter the percent of those respondents providing a particular answer (Yes, Satisfied, Hispanic, etc.) in the "P2" box.
3. Read the table to determine if there is a statistically significant (greater than random chance) difference between the two percentages given the sizes of the samples.

Significant Differences When Comparing Percentages Please enter a number in N1, N2, P1 and P2 fields then tab out of those fields to calculate. Do not use % or other formatting characters. N1: N1: Number of people responding to Question 1 N2: N2: Number of people responding to Question 2 P1: % P1: First percentage for comparison P2: % P2: Second percentage for comparison Difference in percent required @95% Confidence Level: % The Difference Significant

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