Edit: I think this is a better question, Say, I have categorical characteristics such as gender, race. How should I use Fisher's test and chi-square test? I was looking at this: http://math.hws.edu/javamath/ryan/ChiSquare.html
I want to do a hypothesis testing for cancer patients.
Everyone is admitted to the hospital, a small portion went developed cancer, while the rest didn't. The dependent variable is categorical, not numerical, meaning something like severe, mild, and unknown.
How should I give a hypothesis test? Is it possible? Thanks!
Edit: The data analyst used Fisher's Exact or Chi-squared test. I don't know how I can do that, R asks the 2 test groups of equal length