Concentration

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concentration is the chief commerce district-by-street retail research methods, with street sales of durable goods in the shop area of ​​the Central Business District, the construction of such creating area divided by the percentage of sales of convenience goods shops in the streets The total construction area of ​​the central business district such building area expressed as a percentage.

concentration percentage concentration in one industry, a number of the largest companies in the industry output accounted because a ratio of absolute output. A typical metric is the four-firm concentration, ie, the maximum output of the four companies a percentage of total output. Absolute concentration was reflected in an industry monopoly. In the formula,nightseo.com, the concentration namely constantly written CRn fashion. CR is the concentration ratio of the short, n is the largest and n terms of the proportion. For the book market, such market concentration is accustomed apt signify the intensity of tournament or monopoly, routinely expressed with CRn, such for CR4, CR10 and so above. CRn defined as: a certain time within the scope and bargains zone, books / publishers and other ranking menu, ranking altitude of the n varieties of books / n publishing houses such as the value of the project for the same phase and accounted for the amount of all items ratio. CRn = Σ (1-n) / Σ (1-N) N for the absolute project, n is the TOP n project statistics, CRn is ranked and the top of the n terms of the proportion. Report as Oriental books, publishers of market share concentration CR60, is reckoned by: a certain period within the range and sales area, publishers ranked by sales Mayang, in the TOP60 menu of the publishing house's sales and accounted for the same period Mayang Mayang ratio of the total book market. This is equivalent to the time frame, publishers ranked along market share, in the TOP60 list, publishers of the market share (in ratio) of the same period and accounted for the total book market share (100%) ratio. Press CR60 concentration of market share is a common index, which reflects the 60 largest publishers and alterations in competitiveness. Further reading: 1

Chinese book mall monitoring report; Chinese announcements delivery monitoring system; Oriental Publishing Trade Center User Manual

Open Category: Economic Pok, books,8733.org, sale, publishing houses, I must complete the term of economy Pok