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Basic Statistical Testing - Proportions

To understand the results of any survey, two calculations are necessary: the margin of error and the statistical significance of any differences found. Click here for a basic explanation of the relevant statistic procedures. To conduct the calculations yourself, or to view the actual formulas, click on the appropriate link in the box to the right.

Basic Statistical Testing Options

Calculate the margin of error for ...

Test whether a difference is significant
between two ...

Other analyses...

Sample Size Calculators

Calculate sample size needed to achieve a desired margin of error for ...

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