阅读下列说明,回答问题1至问题4,将解答填入答题纸的对应栏内。
【说明】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
【问题1】(7分)(1)请指出该项目的关键路径。(2)请计算该项目的总工期。(3)请计算活动C的总浮动时间和自由浮动时间。【问题2】(4分)假设该项目无应急储备,管理储备为10000元,计算该项目的完工预算BAC和总预算。【问题3】(8)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25000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。【问题4】(6分)在项目第12天结束时,项目经理对项目滞后的原因进行了分析,找出了滞后原因M(由于M造成的偏差是非典型的) (1)假设M在以后的项目实施过程中不会再发生,请计算完工估算EAC。(2)假设M在以后的项目实施过程中一直存在,请计算完工估算EAC。
正确答案及解析
正确答案
解析
【问题1】(1)关键路径为ABCDK和AEFGK。(2)总工期18天。(3)C在关键路径上,总时差和自由时差为0。【问题2】BAC=1000+2000+4000+3000+3000+4000+5000+2000+3000+2000+1000=30000(元)总预算=BAC+管理储备=30000+10000=40000(元)【问题3】PV=1000+2000+4000+3000+4000+2000+3000+2000=21000(元)EV=1000+2000+75%×4000+3000+100%×4000+2000+3000+50%×2000=19000(元)CPI=EV/AC=19000/25000=0.76SPI=EV/PV=19000/21000=0.9【问题4】(1)若M在以后的项目实施过程中不会再发生,则属于非典型偏差EAC=ETC+AC=BAC-EV+AC=(30000-19000)+AC=36000(2)若M在以后的项目实施过程中一直存在,则属于典型偏差EAC=BAC/CPI=30000/0.76=39473.68
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