I have data for 09,10, and 2011. I have an exertion level for each individual. My indivduals are classified by the shift they work (8 day, 8 night, 12 day, 12 night). What is the test/method to use to tell if there is a difference between the 4 different shift vars in terms of exertion level (continuous variable). I can plot out a line graph and visualize it, but I it is not clear to me on what analysis to use. The responses are not paired.
Thank you!
Thank you!