Hi!

I am about to compute 16 recoded variables with the scale of 0-100, into one index. Like I always do I simply add all variables into the compute window and divide them with 16, after adding brackets and addition-signs. After executing the operation I check the frequancy table to control that the new index is OK. Instead of the expected frequency table I receive two tables as the one's below. No valid N. I have figured out that it is two variables that cause the problem, if I exclude them the index is properly constructed. But if I compute those two variables into index there is no problem; only when I combine them with the other 14. I'm lost. Does anyone recognize the problem and have any tip that could solve the problem?

Thanks in advance!

Best Regards,

Peter

Table 1.

Statistics

Test

N Valid 0

Missing 6289

Table 2.

Test

Frequency Percent

Missing System 6289 100,0