What this practice covers
These questions are drawn from past AP Economics papers and filtered to basic economic concepts (macro). You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on basic economic concepts (macro), taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Calling a point outside the PPC "inefficient"; it is unattainable.
- Assigning comparative advantage to the country with the larger output.
- Giving terms of trade outside the range between the two opportunity costs.
- Inverting the opportunity cost fraction, or treating an input problem as an output problem.
- Shifting the PPC outward to represent a recovery from recession.
- Stating opportunity cost in dollars rather than as forgone goods.
- Treating a bowed-out PPC as showing constant opportunity cost.
- Confusing productive efficiency (on the curve) with allocative efficiency (the right point on it).
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Basic Economic Concepts (Macro) revision notes.