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Three Firm Concentration Ratio
Three- or Four-Firm Concentration Ratio
is the total (sum) of the
held by the top three (or four) competitors in a market.
can be measured for any given number of the top competitors, with
listing four and eight as the most common.
Farris, Paul W.; Neil T. Bendle; Phillip E. Pfeifer; and David J. Reibstein (2010).
Marketing Metrics: The Definitive Guide to Measuring Marketing Performance (Second Edition).
Upper Saddle River, New Jersey: Pearson Education, Inc. <
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