I am an archaeologist (PhD candidate) that has recently learned how to perform chi squared tests. However, I am told that for the table below, I would need a Fisher's exact test since some of the bins have <5 in them.
I know that this test is usually for 2x2 tables but that it's possible to use it for larger tables too and I have found a number of sites that allow you to enter the data and give you a P value for 2x4 tables such as mine.
However, I know that in citing the results of a chi-squared test, I must quote the test statistic and the df and presume that I would have to do so for this test also.
I know how to work out the df for chi-squared tests (Row-1)*(Columns-1) but wondered if it was the same foe the Fisher's exact test.
As for the test statistic, I would have no idea where to start. Any help would be much appreciated.
Apologies if this is an old question. I think another person may have asked about this already, although the terminology used in both the question and the answer made it hard to be certain!
Grade 1: 0 2 | 2 Grade 2: 5 58 | 63 Grade 3: 4 3 | 7 Grade 4: 4 3 | 7 --------------+----- TOTAL: 13 66 | 79