I have 3 subjects. Each subject completed the same experiment with 4 randomly interspersed stimulus types. For each stimulus type the subject completed 120 trials on a 2AFC (2-alternative forced choice) task. From these I can calculate a percent correct.
I would like to know if the overall percent correct is statistically different between the four stimulus types, but I am not sure what statistical test to do or how to combine the three subjects.
I am wondering if I need to do something with d' or t-tests?