If you are interested in learning more answers to the question, "what are the top five most profitable master's degrees?," consult these references to find further salary data and career outlook information.
Economists (Occupational Outlook Handbook, 2010-2011 Edition), http://www.bls.gov/oco/ocos055.htm
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Master's Nursing Programs (American Association of Colleges of Nursing), http://www.aacn.nche.edu/education/nurse_ed/msnarticle.htm
Recent Engineering and Computer Science Graduates Continue to Earn the Highest Salaries (National Science Foundation), http://www.nsf.gov/statistics/infbrief/nsf06303/
Table 2: Education and employment status, and median salary of recent graduates with master's degree in science, engineering and health, by major field of degree, April 2006, http://www.nsf.gov/statistics/nsf10318/pdf/tab02.pdf