The basic difference between PERT and CPM is that PERT requires three time estimates of activity completion time, whereas CPM uses only a single estimate. The ES of an activity that has only one predecessor is simply the EF of that predecessor.
Comparison Between PERT and CPM MCQ Question 1 Detailed SolutionCPMPERTCPM is based upon a deterministic approachIt is based on Probabilistic approachOnly one time estimates are made for each activityThree-time estimates are made for each activity
Since PERT accounts for uncertainty and risk the expected duration is more accurate than the single point estimation technique.
PERT and CPM are useful in monitoring costs. Time estimates are subject to fudging by managers. Managers only need to closely monitor the critical path. PERT and CPM are useful when controlling large projects.
Solution(By Examveda Team) CPM which is a method to control costs and time. PERT deals with unpredictable activities, but CPM deals with predictable activities. PERT is used where the nature of the job is non-repetitive. In contrast to, CPM involves the job of repetitive nature.
PERT and CPM are tools used for managing the construction project activities and if followed thoroughly, the construction project can be completed within the time limit and within the cost.
PERT (Program Evaluation Review Technique) is a planning and control tool used for defining and controlling the tasks necessary to complete a project. PERT charts and Critical Path Method (CPM) charts are often used interchangeably, the only difference is how task times are computed.
Program (Project) Evaluation and Review Technique (PERT) is a project network analysis technique that is used to undergo planning and controlling of the projects. The PERT technique focuses on the time and the cost each activity takes. It is aimed to reduce the time and cost of the project.
What is the PERT and CPM? A PERT network is activity oriented while a CPM network is event oriented.
PERT and CPM are techniques of project management useful in the basic managerial functions of planning, scheduling and control. PERT stands for “Programme Evaluation & Review Technique” and CPM are the abbreviation for “Critical Path Method”.
While this tool can be very useful, the majority of respondents agreed that it has limitations, such as, PERT/CPM can become ineffective and difficult to manage if it is not well-defined and stable for active control of a project, PERT/CPM requires frequent updating and revising of calculations, which is an extensive
Another of the limitations of PERT and CPM is that the larger the project, the more complicated the diagram. Above a certain level of complexity, all the lines you map out start to look incomprehensible rather than enlightening.
PERT and CPM are techniques of project management useful in the basic managerial functions of planning, scheduling and control. PERT stands for “Programme Evaluation & Review Technique” and CPM are the abbreviation for “Critical Path Method”. It is commonly used in research and development projects.
A PERT network is activity-oriented while a CPM network is event-oriented. Explanation: A CPM network is activity-oriented while a PERT network is event-oriented. Event is the completion of an activity or the commencement of an activity. An event may be head event, tail event or dual role event.
The Program Evaluation Review Technique (PERT) breaks down the individual tasks of a project for analysis.
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