Tests for Outliers
Chi-squared test for outlier
Test for outlying or inlying variance
Dixon tests for outlier
Grubbs tests for one or two outliers in data sample
Find value with largest difference from the mean
Critical values and p-values for Cochran outlying variance test
critical values and p-values for Dixon tests
Calculate critical values and p-values for Grubbs tests
Interpolate tabularized distribution
Remove the value(s) most differing from the mean
Calculate scores of the sample
A collection of some tests commonly used for identifying outliers.
Useful links