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0455

Demand

Allocation of Resources · 4 question types

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0455 Topics

Demand20%
  1. What Demand Is
  2. The Demand Curve
  3. The Law of Demand
  4. Movement Along the Demand Curve
  5. Shifts of the Demand Curve
  6. Shift vs Movement: the Central Distinction
  7. Individual Demand and Market Demand
Supply18%
Market Equilibrium & Price Mechanism16%
Price Elasticity of Demand (PED)15%
Price Elasticity of Supply (PES)10%
Market Failure & Externalities11%

Frequency legend

High (≥14%)
Above avg (10 to 13%)
Average (<10%)

Exam Frequency Analysis

Past paper frequency (2018 to 2024)

This topic accounts for approximately 20% of your exam marks.

stable
Very High
Stable20%

Demand is the single highest-frequency topic; demand definition, curve shifts, and factors appear on virtually every Paper 2, typically worth 10 to 18 marks.

Demand is the quantity of a good or service that consumers are willing and able to buy at a given price over a given time period.

Two words in the definition carry all the marks.

  • Willing. The consumer actually wants the product. Wanting is a necessary part of demand.
  • Able. The consumer has the purchasing power to pay. Wanting a product without being able to afford it is not demand.

Demand backed by the ability to pay is sometimes called effective demand. A child who wishes she had a £400 phone but cannot pay £400 is not part of the demand for that phone. A wish without purchasing power does not count.

A definition that just says "what people want" or "how much consumers would like to buy" loses the second mark. Both willing and able must appear.

Demand is always measured over a time period (per day, per month, per year) and at a specific price (or across a range of prices). A statement like "demand for coffee is 5,000 cups" is incomplete; "demand for coffee is 5,000 cups per week at £3 per cup" is the correct form.

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The PPC and the Three Big Questions

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The Demand Curve