Oligopoly (OCR A-Level Economics): Quizzes

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Oligopoly
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What are the two defining features of an oligopoly market structure?

Small number of firms & interdependence

What do concentration ratios measure in a market?

Market share of largest firms

If firms have market shares of 30%, 25%, 20%, and 10%, what is the CR4CR4 ratio?

85%85\%

Which characteristic prevents new firms entering an oligopoly easily?

High barriers to entry

What does non-price competition refer to?

Strategies other than price changes

In kinked demand curve theory, what happens if a firm raises its price?

Others won't follow; loses market share

What is demand elasticity above the kink in the kinked demand curve model?

Relatively elastic

What happens if one firm lowers its price in an oligopoly?

Others follow; small gain in share

Why does the kinked demand curve model explain price rigidity?

Firms avoid price changes due to rivals

What is an example of formal collusion?

OPEC agreeing on production quotas

What characterises tacit collusion?

No formal agreements; price leadership

What does product differentiation aim to achieve?

Competitive advantage & higher prices

Which is an example of non-price competition?

Advertising and branding

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