CONCENTRATION RATIO: The proportion of total output in an industry that's produced by a given number of the largest firms in the industry. The two most common concentration ratios are for the four largest firms and the eight largest firms. The four-firm concentration ratio, as such, is the proportion of total output produced by the four largest firms in the industry and the eight-firm concentration ratio is proportion of total output produced by the eight largest firms in the industry.

     See also | industry | firm | market share | market control | four-firm concentration ratio | eight-firm concentration ratio | oligopoly | monopolistic competition | market structure |

CONCENTRATION RATIO, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: July 8, 2025].

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A table or chart that represents the relation between saving by the household sector and income. A saving schedule is commonly used for a basic, instructional presentation of aggregate saving activity by the household sector and is also used as a source of numbers for deriving the saving line. The key measures derived from the saving-income relation in the schedule are average propensity to save and marginal propensity to save. The consumption schedule is comparable, and more important, table for the relation between consumption and income.

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