are griffb tests discredited have dixon's and griubb's methods been discredited who was the first to use grubb are dixon and grubb's methods discredited? has dixon's grobb's method been discredited which statistic is used for univariate testing has dixon's method been discredited why is dixons and graubbs tests discredited has the grubb test been discredited who recommends a univariate outlier which of the following methods was endorsed by dixon? is the grubb test discredited? why was gubb's test discredited has dixon's and grubb's method been discredited? have dixons and grubbs methods been discredited has dixon s and graubbs test been discredited? who developed griubb's and dixon's tests? has dixon's and grubb's method been discredited? have dixons and grubbs methods been discredited? which statistic was developed in the 1990s to test for univariate outliers?