Moments
Skewness and kurtosis are two of the first four moments of a normal distribution. Both can be used to test the assumption of normality of a data distribution, although they are less widely used than other contrast pr graphical methods.
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Step by Step. Probability calculations with a normal distribution. A series of examples of how to do probability calculations with a normal distribution are shown, as well as the advantages of standardizing the data.
Management of non-normal data. When we are dealing with the management of non-normal data, we must use other strategies to make a hypotheses contrast.
Theoretical quantiles graph. The theoretical quantiles graph (q-q plot), used to check the normality of the data of a distribution, is reviewed.