There are advantages and disadvantages to working for one’s self. The advantages are that the rewards can be substantial. However it is also possible to have nothing to show for a lot of work. In theory the variation in income for self-employed individuals is greater than the variation in income for people who work for someone else (WRKSLF: 1 = self employed, 2 = work for someone else). Conduct a test to determine whether there is enough evidence to support the theory (RINCOME).