Which tool do economists use to determine the effect of an economic event on equilibrium price and quantity?

Who would be most likely to move from Europe to the New World in the early 1600s?

a. A 19 year-old, first born son with many skills b. A 37 year-old skilled carpenter c. A 17 year-old from a poor family d. A 21 year-old woman e. An unskilled laborer with a wife and two children

Which of the following would be most appropriate for the measurement of differences in the average standard of living of people at different points in time? Select one:

a. Nominal GDP b. Real GDP c. Nominal per capita GDP d. Real per capita GDP