What Is Normal, Anyway?

  • What Is Normal, Anyway?

    Maria Calzada, Stephen Scariano
    The Lilliefors test for normality has not been given the prominence it deserves in statistics education, perhaps because of its intensive reliance on graphics and numerical computation. Now that students have access to graphing calculators, the Lilliefors test for normality must become as important a tool as histograms and normal-quantile plots in exploratory data analysis.