Question: What Is The Meaning Of PERT Chart?

What is the difference between CPM and PERT?

PERT is a technique of planning and control of time.

Unlike CPM, which is a method to control costs and time.

PERT technique is best suited for a high precision time estimate, whereas CPM is appropriate for a reasonable time estimate.

PERT deals with unpredictable activities, but CPM deals with predictable activities..

Why would you use a PERT chart?

PERT charts are generally used before a project begins to plan and determine the duration of each task—so they don’t have to show the actual dates of your project. They also do a better job of showing whether certain tasks need to be completed in order or whether they can be completed simultaneously.

What is PERT chart and Gantt chart?

Essentially, a Gantt chart is a bar chart that lays out project tasks and timelines linearly. … A PERT chart, on the other hand, is structured as a flow chart or network diagram that displays all the project tasks in separate boxes and connects them with arrows to clearly show task dependencies.

How do you use Pert in project management?

To implement a PERT chart:Identify the different tasks needed to complete a project. Make sure to add these in the right order and indicate the duration of each task.Create a network diagram. Use arrows to represent the activities and use nodes as milestones.Determine the critical path and possible slack.

What is the critical path in a PERT chart?

In project management, a critical path is the sequence of project network activities which add up to the longest overall duration, regardless if that longest duration has float or not. This determines the shortest time possible to complete the project.

What is the main advantage of pert?

Advantages. A PERT chart allows managers to evaluate the time and resources necessary to manage a project. This evaluation includes the ability to track required assets during any stage of production in the course of the entire project. PERT analysis incorporates data and information from multiple departments.

Where is PERT and CPM used?

The use of project planning and control techniques based on PERT or CPM are now common in all types of civil engineering and construction work, as well as for large developmental projects such as the manufacture of aircraft, missiles, space vehicles, and large mainframe computer systems.

What are the steps in Pert?

PERT planning involves the following steps:Identify the specific activities and milestones. The activities are the tasks required to complete a project. … Determine the proper sequence of the activities. … Construct a network diagram. … Estimate the time required for each activity. … Determine the critical path.

What are the components of a PERT chart?

The most common elements used in a PERT chart are:Activity.Duration time.Early start time.Early finish time.Late start time.Late finish time.Slack.Critical path.

Both of these charts are used for task scheduling, controlling, and administering the tasks necessary for the completion of a project. The difference between them is that a PERT chart is a kind of network diagram, while a Gantt chart is a bar chart.

How do you make a PERT chart?

Steps to Creating a PERT ChartBegin by identifying the project milestones and then break those down into individual tasks.Figure out the sequence of the tasks.Make the PERT diagram — we’ll show you how in the section below!Do an estimate for each task and the time it will take to complete it.More items…

What is PERT and CPM techniques?

1. PERT is that technique of project management which is used to manage uncertain (i.e., time is not known) activities of any project. CPM is that technique of project management which is used to manage only certain (i.e., time is known) activities of any project.

Is pert more accurate than CPM?

Since PERT accounts for uncertainty and risk the expected duration is more accurate than the single point estimation technique. PERT further allows representation of large amounts of data for further analysis and modelling.

What are the advantages and disadvantages of PERT chart?

The advantages of PERT can apply to many industries, but managers need to be aware of how to use PERt effectively.Advantage: Activity Analyses. … Advantage: Department Coordination. … Advantage: What-if Analysis. … Disadvantage: Subjective Analysis. … Disadvantage: Time Focus.

What is a pert schedule?

A PERT chart, sometimes called a PERT diagram, is a project management tool used to schedule, organize and coordinate tasks within a project. … PERT stands for Program Evaluation Review Technique, a methodology developed by the U.S. Navy in the 1950s to manage the Polaris submarine missile program.