Plots the density distribution of 'x' (e.g., smoothed histogram) with an overlaying normal density plot with the same mean and SD. This is useful for 'seeing' the degree of deviance from normality.
any data object such as a column(s) or variable(s) from a data.frame
number of items in x-multivariate to be plotted
plotNormX is useful for single use (univariate) objects, but
plotNormXm is more useful for creating multiple graphs (i.e., multivariate) as in sending graphs to a postcript or pdf device. See examples below.
A graph of density of x.
Thomas D. Fletcher email@example.com
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