In the supply-and-demand schedule shown above, at the prices of and there is excess demand because quantity demanded is greater than quantity supplied.
a) $25, $50
b) $25, $200
c) $150, $200

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.