4. You find out that your aunt works for a defense manufacturing company that
has several defense contracts with the government. She tells you that she works
for a team that is producing a communications satellite.

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.