+360-Questions-and-Answers-For-PMBOK-Guide-SIXTH -Edition

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projectteamisusingitstime.Itissometimesusedinconjunctionwiththecostperformanceindex
(CPI)toforecastthefinalprojectcompletionestimates.

AnSPIvaluelessthan 1. 0 indicateslessworkwascompletedthanwasplanned.AnSPIgreaterthan

1. 0 indicatesthatmoreworkwascompletedthanwasplanned.BecausetheSPImeasuresallproject
   work,theperformanceonthecriticalpathalsoneedstobeanalyzedtodeterminewhetherthe
   projectwillfinishaheadoforbehinditsplannedfinishdate.TheSPIisequaltotheratiooftheEVto
   thePV.Equation:SPI=EV/PV

...

Thethreeparametersofplannedvalue,earnedvalue,andactualcostcanbemonitoredand reported
onbothaperiod-by-periodbasis(typicallyweeklyormonthly)andonacumulativebasis. Figure 7 –
12 usesS-curvestodisplayEVdataforaprojectthatisperformingoverbudgetandbehindschedule.