I'm having some issues regarding a conjoint analysis. Excuse me if some of the terms I use are wrong, but it has been some time since I last worked with SPSS - and my teacher was Danish.
I am to make a series of concept travelpackages (Attributes and attribute notes/levels).
This far I've got things under control - I've reduced the number of packages from 81 to 9, with the help of 'ortogonal' design.
These 9 packages have been rated by some people (1-10), on a questionnaire.
Then I've been asked to write a syntax which evaluates my conjoint plan.
CONJOINT PLAN= 'C:\Users\MYNAME\DROBBOXFOLDER\Conjoint_cards.SAV'
/SCORE=Card_1 TO Card_9
/FACTORS= SMS Minutter Data Tryghed
However I keep getting this error
SUBJECT SUBCOMMAND -- Subject variable is not on data file.
Execution of this command stops.
At this point I've been to the dark pages of Google and back for an answer to what I am doing wrong, but nothing so far. The answer is probably staring me in the face. But I will appreciate any help or pointers as to what I'm doing wrong.