Project cost management__ Cost management technology__ Article 8 performance review

The objects of performance review include ： Cost performance changes over time 、 Progress activities or work packages exceeding and below budget , And an estimate of the funds needed to complete the work . If... Is used EVM,   The following analysis is required ：

1.  Deviation analysis . stay EVM in , Deviation analysis is used to explain cost deviation (CV= EV-AC)、 Schedule deviation （SV=EV-PV） and

Deviation from completion (VAC=BAC-EAC) Original calendar 、 Impact and corrective action .

Cost and schedule deviations are the two most important deviations to be analyzed . 

Procedures that deviate from the original cost benchmark can be evaluated by cost performance measurement . The important work of project cost control includes ：

Determine the reasons and procedures for deviation from the cost benchmark , And decide whether corrective or preventive measures need to be taken . With the progress of project work zhubu   complete , Acceptable range of deviation ( Usually expressed as a percentage ) take zhubu narrow .

2.   Trend analysis . The purpose of trend analysis is to review the change of project performance over time , To determine whether performance is improving or deteriorating .

3.   Earned value performance .   Compare actual schedule and cost performance with performance measurement benchmarks . If not EVM,   It is necessary to compare and analyze the actual cost of the completed work with the cost benchmark , To examine cost performance .