CORE Colloquia: Is a Probability Sample Required?

EVENT: Friday, Feb 14.

Survey_Research_and_Design_Colloquia_Stokes_212x150Probability samples assure external validity, or the ability to generalize from a sample to a population of interest. But are they necessary for internal validity? Dr. Stokes discusses the difference in these being investigated for the purpose of improving non-probability sample’s external validity, either at the sample selection or analysis stage. READ MORE

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