The Major Differences and Similarities between PERT and CPM

PERT(Program Evaluation and Review Technique) | CPM (Critical Path Method)_____________________________________ | ______________________________________1)PERT is a probabilistic tool used with three 1)CPM is a deterministic tool, with only singleEstimating the duration for completion of estimate of duration.activities._______________________________________________________________________________

2)This tool is basically a tool for planning 2)CPM also allows and explicit estimate ofand control of time. costs in addition to time, therefore CPM can control both time and cost._______________________________________________________________________________3)PERT is more suitable for R&D related 3)CPM is best suited for routine and thoseprojects where the project is performed for projects where time and cost estimates canthe first time and the estimate of duration be accurately calculated.are uncertain._______________________________________________________________________________

4)The probability factor i major in PERT 4)The deterministic factor is more so values orso outcomes may not be exact. outcomes are generally accurate andrealistic.