It can often happen, however, that a plot of the sample variogram shows so much scatter that no particular form is evident. The cause of this scatter can be one or more outliers in the pairwise ...

Use box plots to illustrate the spread and differences of samples. Nature Methods ... Quartiles are insensitive to outliers and preserve information about the center and spread.

Outliers that differ significantly from the rest of the dataset may be plotted as individual points beyond the whiskers in the box plot. Box plots can be drawn either horizontally or vertically. The ...