Positive statements can be evaluated using data alone, but normative statements cannot

The market supply curve is found by

A) horizontally summing all individual supply curves. B) vertically summing all individual supply curves. C) Either A or B above since they both give the same answer. D) None of the above.

A demand schedule is a numerical tabulation of the ___________________ of a good at different ____________________

A) quantity supplied; prices B) quantity demanded; incomes C) quantity demanded; prices D) quantity supplied; incomes