End Notes
1: These examples are drawn from both goodness-of-fit and regression traditions. Goodness-of-fit
tests look for specific distributions in data, such as testing a variable for normality.
Regression fit looks specifically of an association that is a straight line. The underlying
principle is essentially the same in both cases: we are looking for patterns in data.
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2: You can ask for both skewness and kurtosis statistics in SAS in the PROC UNIVARIATE
module among others, see the code “Code07b Univariate descriptives” for an example.
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3: Cut-offs for skewness are debatable – some authors suggest +-1, others +-2.
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4: However, the more sophisticated tests have their own dangers, as discussed in the next chapter. ...
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