Journal of the Royal Statistical Society Series C (Applied Statistics) · 1968 · 45 citations · 0 references
Natural SciencesMathematicsStatisticsHypothesis TestingInferential StatisticsSample SizeSampling MethodsStatistical AnalysisStatistical InferenceAsymptotic NormalityNoncentral DistributionsSample Size CalculationSample Size EstimationT-test
Student's t assumes that the parent population is normal. This paper describes a practical investigation to determine how large the sample size must be for various kinds of non‐normality to cease to have an appreciable effect on the distribution of t.