getting the confidence interval

[Werner LEMBERG]

Folks,


I would like to get a 95% confidence interval so that I could use it
in AGGREGATE, e.g., 

  AGGREGATE OUTFILE * MODE ADDVARIABLES
    /BREAK=...
    /Mean = mean(V)
    /CI = ci(V, 0.95)

What must I do to get the result of my hypothetical `ci' function?
I'm a PSPP novice, so maybe there is a better solution than AGGREGATE
– what I ultimately want is to emit the confidence interval of a
variable to a CSV file using SAVE TRANSLATE.


    Werner