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Confidence IntervalsItem Response TheorySocial SciencesMissing DataNoncentral T DistributionQuantitative MethodsConfidence IntervalAnalysis of VarianceStatistics TeachingData AnalysisNull HypothesisMonte Carlo SimulationExploratory Factor AnalysisClassical Test TheoryConfirmatory Factor AnalysisSoftware PackagesStatistical AnalysisCritical ValuesStructural Equation ModelingSample Size