st: which statistical analysis to use

[Deborah Beckers <deborahbeckers@hotmail.com>]

Hello everybody, 


I'm having a problem with statistical analysis for my thesis. I am using stata 11 for windows.
My data consists of a survey filled in by 360 companies, and the question I want to use is a question where they get a list of 27 employee skills, and they have to choose the 7 most important skills, by giving them a score from 1 to 7. The other skills (which they find less important) are not given any score (they are zero in my data). The data for that question thus looks somewhat as follows (example for 3 companies, one row per company:


My question is: what kind of statistical analysis should I do, and how, to find out whether certain skills are ranked as more (or less) important than others by the companies, and if this difference is significant?
I tried to do this with a chi-square test for goodness of fit, but i got the error: too many variables specified. 


Can somebody please help me?
Thank you! 		 	   		  
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