Unlike the economies of japan and india, the north korean economy a) is almost entirely run by the government. b) is open to the forces of supply and demand. c) has limited its reliance on military spending. d) has not completely collapsed into an economic depression.

For each of the following examples of data, determine which scale of measurement is used. a) the number of miles joggers run per week. b) the starting salaries of graduates of mba programs c) the months in which a firm's employees choose to take their vacations. d) the final letter grades received by students in a math course.