Hi,

I am trying to determine outliers on one variable (e.g. self reported

money spent on gas). What I want to do is calculate the "studentized

deleted residual", i.e. a z-score that does *not* take the i-th value

into account for calculating the standard deviation and mean.

Technically, this is r-i = ((Y-i - Y-hat)/s-hat)

Where Y-hat is the mean of all datapoints *excluding* i, and s is the

standard deviation of all datapoints excluding i.

There are ways to get the studentized deleted residuals for a

regression analysis, but I don't have a dependent or independent

variable, I am just looking of a frequency count of one variable.

Does anybody know if there is an easy way to do this in SPSS? It would

be fairly straightforward in MS Excel, but I would like to avoid going

back and forth between the programs.

Thanks

Katsche