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Principles of Economics 2e

2nd Edition
Steven A. Greenlaw; David Shapiro
ISBN: 9781947172364

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BuyFindarrow_forward

Principles of Economics 2e

2nd Edition
Steven A. Greenlaw; David Shapiro
ISBN: 9781947172364
Textbook Problem

How do we measure a four-firm concentration ratio? What does a high measure mean about the extent of competition?

To determine

How to calculate four-firm concentration ratio and what does it show if it is high?

Explanation

Consider the market for a product ‘X’. There are total 25 firms in the market which sells the product ‘x’. To calculate the four-firm concentration ratio, we will add the market share of four largest firms in the market for product ‘x’.

Suppose, the following firms has given market share,

Firms Market Share
Firm ‘A’ 16%
Firm ‘B’ 12%
Firm ‘C’

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