bySharonL.Lohr,2ndeditionArizonaStateUniversityinEnglishCHAPTER1Introduction11.1ASampleControversy11.2RequirementsofaGoodSample31.3SelectionBias51.4MeasurementError91.5QuestionnaireDesign111.6SamplingandNonsamplingErrors161.7Exercises19CHAPTER2SimpleProbabilitySamples25