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Statistical Calculators

Interactive browser-based calculators for your survey research.

 
Number of Surveys – Sample 1
Observed % – Sample 1 (written as a number between 0 and 100; i.e., 70% = 70)
Number of Surveys – Sample 2
Observed % – Sample 2 (written as a number between 0 and 100; i.e., 70% = 70)
Confidence Interval ±
Significance =