Examlex
The sample proportion is a consistent estimator of the population proportion p because it is unbiased and the variance of
is p(1 - p) / n, which grows smaller as n grows larger.
Herfindahl Indexes
Measures of market concentration, calculated by summing the squares of the market shares of all firms within the industry to assess the competitive landscape.
Market Power
The ability of a company or entity to influence or control prices and total market output in an industry.
Four-Firm Concentration Ratio
A metric that measures the total market share of the four largest firms within an industry, used to assess the degree of competition and market concentration.
Herfindahl Index
An index determining the level of market concentration by aggregating the squared market shares of all companies in the sector.
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