寡头和垄断竞争第10 章1不完全竞争者的行为10.12市场势力n Market power signifies ( 表示) the degree of control that a firm or a small number of firms has over the price and production decisions in an industry.n The most common measure of market power is the four-firm concentration ratio. 3Firm OutputFirm OutputFirm 1 Firm 1 25 25Firm 2 Firm 2 20 20Firm 3 Firm 3 15 15Firm 4 Firm 4 10 10Firm 5 Firm 5 8 8Firm 6 Firm 6 7 7Firm 7 Firm 7 5 5Firm 8 Firm 8 5 5Firm 9 Firm 9 3 3Firm 10 Firm 10 2 2=70=704 企业集中度Concentration Ratios:C
