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SingaporeEconomics

The Central Economic Problem

5 dot points across 5 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

How do economists separate what is from what ought to be, and why does it matter for policy?

Distinguish positive from normative statements and explain the role of value judgements in economic analysis and policy
A focused answer to the H2 Economics learning outcome on positive and normative economics. How to tell a testable factual claim from a value judgement, and why the distinction shapes evaluation and policy debate.
7 min answer →

How can a single curve show scarcity, choice, opportunity cost and growth all at once?

Use the production possibility curve to illustrate scarcity, choice, opportunity cost, efficiency and economic growth
A focused answer to the H2 Economics learning outcome on the production possibility curve. How the PPC shows scarcity, choice and opportunity cost, why it is usually concave, and how points on, inside and beyond it are interpreted.
9 min answer →

How do rational agents decide how much to do, and why is the margin the key?

Explain rational decision-making by economic agents using marginal analysis and the comparison of marginal benefit and marginal cost
A focused answer to the H2 Economics learning outcome on rational decision-making. How consumers, firms and governments weigh marginal benefit against marginal cost, and why decisions are made at the margin, not in totals.
8 min answer →

Who decides what gets produced, and how do market, planned and mixed economies differ?

Compare how market, planned and mixed economies allocate scarce resources and answer the what, how and for whom questions
A focused answer to the H2 Economics learning outcome on economic systems. How market, planned and mixed economies answer the what, how and for whom questions, and the strengths and weaknesses of each.
8 min answer →

Why must every society make choices, and what is the true cost of any choice?

Explain scarcity as the fundamental economic problem, and show how it forces choice and gives every decision an opportunity cost
A focused answer to the H2 Economics learning outcome on scarcity, choice and opportunity cost. Why unlimited wants meet limited resources, why this forces choice, and how opportunity cost measures the true cost of any decision.
8 min answer →