挣值分析的评价指标: CV(成本偏差)=EV-AC CV>0成本节省,CV<0成本超支 SV(进度偏差)=EV-PV SV>0进度提前,SV<0进度落后 CPI(成本绩效指数)=EV/AC CPI>1成本节省,CPI<1成本超支 SPI(进度绩效指数)=EV/PV SPI>1进度提前,SPI<1进度落后