Syntax - Stata
Skewness and kurtosis test for normalitySyntaxMenuDescriptionOptionRema rks and examplesStored resultsMethods and formulasAcknowledgmentsReferencesAlso seeSyntaxsktestvarlist[if] [in] [weight] [, noadjust]aweights andfweights are allowed; see[U] >Summaries, tables, and tests>Distributional plots and tests>Skewness and kurtosis normality testDescriptionFor each variable invarlist,sktestpresents a test for normality based on skewness and anotherbased on kurtosis and then combines the two tests into an overall test aminimum of 8 observations to make its calculations.
If normality is rejected, use sktest to determine the source of the problem. As bothD’Agostino, Belanger, and D’Agostino(1990) andRoyston(1991d) mention, researchers should also examine the normal quantile plot to determine normality rather than blindly relying on a few test statistics.
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