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When we have relatively large sample sizes, the distribution-free tests for comparing two groups or sets of data discussed in the text have
Herfindahl Index
A method for evaluating market concentration by squaring individual firms' market shares and then aggregating these squared figures.
Concentration Ratios
Measures that indicate the extent of market control by the largest firms in an industry, reflecting the level of competition.
Market Power
Describes the ability of a company or group to manipulate or control prices within a market, often by influencing supply, demand, or both.
Four-Firm Concentration Ratio
A measure of market concentration that quantifies the market share of the four largest firms within an industry, often used to assess the competitiveness of a market.
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