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Programmed instruction and computer-assisted instruction make use of
Industry Exit
The process by which businesses leave a particular market or cease operations, often due to unprofitability or strategic realignment.
Herfindahl Index
A measure of market concentration and competition among firms within an industry, calculated by summing the squares of individual firms' market shares.
Four-Firm Concentration Ratio
A measure of market structure that indicates the combined market share of the four largest firms in an industry, used to assess the level of competition.
Market Power
The ability of a firm or group of firms to manipulate prices or output in a market.
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