Statistical outliers

thumb|Figure 1. Box plot of data from the [[Michelson–Morley experiment displaying four outliers in the middle column, as well as one outlier in the first column.]]

method for graphically depicting groups of numerical data through their quartiles

The identification of rare items, events or observations which raise suspicions by differing significantly from the expected or majority of the data

statistical method

algorithm

means of assessing whether a data point is flawed

measure of the influence of a data point in regression analysis

criterion for identification and rejection of outliers

statistical test

Kind of ratio