Survey Calculators (v. 1.0) Разработано Metrix Matrix Inc. |
A collection of three calculators for survey analysis:
SAMPLE SIZE CALCULATOR: Used to identify the correct sample size based upon population size, desired confidence interval and confidence level.
CONFIDENCE CALCULATOR: Identifies the actual margin of error base upon population, sample and response distribution.
SIGNIFICANCE CALCULATOR: Reveals whether or not the difference in responses between two groups is statistically significant or not.
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[2011-04-13] Domenico: Works perfectly! Exactly what I needed to find confidence interval or sample size. The significance calculator is great for quickly comparing results! |
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