How can I mark all negative values of all variables as missing in SPSS? I have a dataset of more then 300 variables but none of the have missing values defined, but for all of them -1 and -2 should be treated as missing values. Is there a better way than to do it by hand for every variable?
If you really mean all values <= -1 and all variables, you can use a missing range, like this:
missing values all (lo thru -1).