下图给出了一个信息系统项目的进度计划网络图（含活动历时）
下表给出了该项目各项活动的历时和成本估算值。
按照项目进度计划，第12天结束时应完成活动C、F、J，实际情况为：C完成了75%；F完成了100%；J完成了50%；实际花费25?000元。请计算该时点的计划值PV、挣值EV、成本绩效指数CPI和进度绩效指数SPI。（详细的解题步骤）
正确答案及解析
正确答案
解析
PV=1?000+2?000+4?000+3?000+4?000+2?000+3?000+2?000=21?000（元）EV=1?000+2?000+75%×4?000+3?000+100%×4?000+2?000+3?000+50%×2?000=19?000（元）CPI=EV/AC=19?000/25?000=0.76SPI=EV/PV=19?000/21?000=0.9
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