Production at the minimum point of Average Cost (AC)Production at the minimum point of Average Cost (AC) 2. Macroeconomics: National Income & Indicators

ΔTCΔQthe fraction with numerator cap delta cap T cap C and denominator cap delta cap Q end-fraction : Profit : Efficiency & Objectives : Profit Maximization : Revenue Maximization : Allocative Efficiency : Productive Efficiency :

And remember: the booklet has no formulas for evaluation phrases like “however,” “this depends on,” or “in the long run…” Those come from you. The booklet just handles the math so you can be the economist.

"If the MPC is 0.8 and the government increases spending by $10 million, calculate the total increase in national income."

What’s remarkable is that this booklet isn’t just for IB points. Professional economists, policy analysts, and financial consultants use these exact formulas daily. The for income inequality appears in World Bank reports. The Herfindahl-Hirschman Index (HHI) for market concentration is used by antitrust regulators at the FTC. The Lerner index of monopoly power appears in competition policy cases.