3.10 SW As the head of a social services agency, you believe that your staff of 20 social workers is very much overworked compared to 10 years ago. The case loads for each worker are reported below for each of the two years in question. Has the average case load increased? What measure of central tendency is most appropriate to answer this question? Why?

2000 2010 52 55 42 82 50 49 75 50 57 50 69 52 49 52 65 50 45 59 58 55 65 60 64 65 60 65 69 60 55 68 60 60 42 60 50 60 50 42 60 60