Survey questionnaire to find out the important factors? For my masters dissertation I am currently preparing a Survey Questionnaire. The dissertation main aim is to find the factors which have an impact on failure of IT related projects in SMEs. I have done some extensive reading in the respective area and shortlisted around 30 factors.
My current plan is to use each of these factors as a Likert item, with 5 options. Then the idea was to find the mean and the standard deviation for each of these item. Then from the survey result shortlist the 10 most selected factors with the highest mean.
But googling around especially on this site I have read that it is advisable not to calculate the mean of the likert item, mostly because they are ordinal. 
Is likert approach the right one? if yes, are there methods (other then mean calculation) to find the 10  most selected factors from the survey?
Help on this would really be appreciated.
Thank You
 A: I think there are a few issues here:
1) Terminology can get confusing, especially the term "factor" which could be part of a factor analysis or could be used just as a general term. Clearly, you are doing the latter.
2) Testing each "factor" with a single item is almost surely not enough. Single questions get misinterpreted (ask anyone who has done survey research!) and do not cover a "factor" fully.  If you have multiple items for each factor, you can then sum them or do a formal factor analysis, and, if the latter, you can take the means of the factor scores.
3) You will surely want to do some pilot testing. I know this isn't a full scale-development exercise, but still.... 
4) How are you going to test whether the factors that results from the survey are correct? Do you have a measure of "failure of IT projects" or is this just going to be people's opinions of why these projects fail?
5) Finally, if, despite the above,  you do wind up using just single Likert scale, you can take the median (although there may be a lot of ties) or you can take the proportion that got a "5" or the proportion that got, e.g. above 3.
Writing a good survey is one of those things that are a lot harder than people think. 
