Another measure of the efficiency of investment is the incremental capital - output ratio ( icor ) : the investment needed to generate an additional unit of output , measured as annual investment divided by the annual increase in gdp 對投資效率的另一種衡量是投資產(chǎn)出增量比:即每增加一單位產(chǎn)出所需的資本量,以用年度投資額除以gdp的年增量來計算。
百科解釋
The Incremental Capital-Output Ratio (ICOR), is the ratio of investment to [which is equal to 1 divided by the marginal product of capital]. The higher the ICOR, the lower the [[productivity of capital.