Mild Outliers
Mild outliers are any data values which lie between 1.5 times and 3.0 times the interquartile range below the first quartile or above the third quartile. x is a mild outlier if ...
Q1 - 3 * IQR <= x < Q1 - 1.5 * IQR
or
Q1 + 1.5 * IQR < x <= Q3 + 3 * IQR
