CALCULATE STATISTICAL VALIDITY FOR YOUR SURVEY
Determining statistical validity is easy with the VGI StatCalculator.
Fill in any three variables, and the calculator will tell you the fourth.
Read our blog article about sampling
Population or universe
If you randomly interview a sample of 383 respondents from a population of 100,000, 95 times out of 100 (95% confidence level) the answer will be within 5% in either direction of reality (sampling error).
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January 12, 2009
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