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词汇 Lerner index
分类 英语词汇 英语翻译词典
释义

Lerner index

英语百科

Lerner index

The Lerner index, formalized in 1934 by Abba Lerner, describes a firm's market power. It is defined by:

L=\frac{P-MC}{P}

where P is the market price set by the firm and MC is the firm's marginal cost. The index ranges from a high of 1 to a low of 0, with higher numbers implying greater market power. For a perfectly competitive firm (where P=MC), L=0; such a firm has no market power.

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