* Use Mlb1.DTA
* The base group is outfielders.  Obviously, pitchers are not being considered. 
regress lsalary years gamesyr bavg hrunsyr rbisyr runsyr fldperc allstar frstbase scndbase thrdbase shrtstop catcher
* Test that salaries do not differ by position
test frstbase scndbase thrdbase shrtstop catcher