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Statistical Significance Defined: Statistical significance is said to exist when a difference between samples/responses is large enough so as to be attributed to something other than expected sampling error. For the calculator below, significance is indicated by a 'Yes' or 'No' result in the Significance textbox. Please examine the text below the calculator for usage instructions.

Enter Test Parameters Sample Size #1 Percentage Response #1   Sample Size #2 Percentage Response #2   Test Results Comparative Error Difference Significance

Usage Instructions: The statistical significance calculator requires two separate sample/response pairs in order to make a meaningful calculation. Enter your first sample/response pair in the 'Sample Size #1', 'Response #1' text boxes and your second sample/response pair in the 'Sample Size #2', 'Response #2' text boxes. Click the 'Calculate' button and the results are displayed.