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Survey Calculators (v. 1.0)
Metrix Matrix Inc. опубликовал приложение 2011-11-22
(обновлено 2011-11-22)
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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Разработчики
