Help with analysis

I am using GraphPad Prism 5.0 for Mac and trying to perform Fishers exact test on data. The data has 2 columns and 3 rows and will only perform analysis if I remove a row, am I missing something? Is Fishers the correct analysis to use - I'm analysing data looking a initial diameter to see if it predicts outcome (only 2 outcomes). Please help - I have a very very basic grasp of stats!
Thanks :)



Fishers can be used for larger than 2 x 2 contingency tables but many programs limit you to 2 x 2. This is like the reason for you problem.

Since this thread is in the new member introduction: Could you tell us more about your areas on interest with stats or other relevant information about yourself.