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RegisterStudentized Residuals [Outliers]
Hello!
One of the test for outlier detection is the use of studentized residuals, but I have a doubt of what is the correct formula to use, I know the following formula Stud-Res= Residual/sqrroot(MSerror), however today I read that this Studentized Residuals are obtained with this formula Stu-Res=residual/(sqrroot(1-hii), so this is when I ask for your help, are this two formulas the same? or which one is the correct to use?.
Last question, what is the value in which I can consider a value as outlier ±2 or ±4?
Thank you for your answer and excuse my lack of knowledge in this issue.
Risherd.
One of the test for outlier detection is the use of studentized residuals, but I have a doubt of what is the correct formula to use, I know the following formula Stud-Res= Residual/sqrroot(MSerror), however today I read that this Studentized Residuals are obtained with this formula Stu-Res=residual/(sqrroot(1-hii), so this is when I ask for your help, are this two formulas the same? or which one is the correct to use?.
Last question, what is the value in which I can consider a value as outlier ±2 or ±4?
Thank you for your answer and excuse my lack of knowledge in this issue.
Risherd.
Complete thread:
- Studentized ResidualsRisherd 2012-01-07 00:46
![[Mix]](https://static.bebac.at/img/mix.png "open in Mix view")
- Studentized Residuals Helmut 2012-01-09 18:02
- Studentized Residuals Risherd 2012-01-09 22:48
- Studentized Residuals Helmut 2012-01-09 18:02
Ing. Helmut Schütz