Examlex
The interaction test is performed before making any conclusions based on the tests for the main effects.
Industry
It refers to the collection of businesses and operations involved in the production, manufacturing, or distribution of goods and services in a specific sector.
Four-firm Concentration Ratio
A metric that shows the total market share controlled by the four largest firms within an industry.
Pure Competition
A market structure characterized by a large number of small firms, similar products, and free entry and exit, leading to perfect competition.
Oligopoly
A market structure dominated by a small number of large firms, leading to limited competition and often strategic behavior among firms.
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