The median is preferred to the mean for determining central tendencies because it is less a ected by these.
Dixon names a test for identifying these things which he says should not be used more than once. These things, which come in point, collective, and contextual varieties, can be detected by Grubb's test. Chauvenet names a cri- terion for determining whether these things should be taken into account, and an earlier criterion for that is named for   Peirce. Two methods for dealing with these things are trimming and Winsorising. The median is preferred to the mean for determining central tendencies because it is less a ected by these. For ten points, identify these data points which are far away from the rest of the data in a data set.
Dixon names a test for identifying these things which he says should not be used more than once.
outliers