I am trying to analyse data from a survey. I have a lot of nominal-nominal, and nominal-ordinal comparisons to do and was thinking to use chi-square. When performing this test however I almost always recieve the warning that xx% of expected values are under 5. Since my cross tabulation table is larger than 2x2 I assume I can't use Fisher's exact test. However, in the SPSS manual, and help function in regards to the exact test function, it states that if I use the exact option and obtain the exact p-value instead of the asymp. p-value, then I can ignore the warning given.. Does anyone know if that is true? Is it appropriate to use the exact version of the pearson chi-square to get around the warning? It says in the help function that the assumptions for the chi-square can be ignored, but apart from documents from SPSS I can't seem to find that much info about this test (except for on the fishers exact test). Or is there another approach out there that I could take?
If anyone can help me that would be much appreciated!
This is the link to a document on the exact test module: http://public.dhe.ibm.com/common/ssi/ec ... 18USEN.PDF