Industrial Engineering and Production Management
Which of the following statement is correct about the network diagram?

All of the these
The head of the arrow represents the end of an activity.
The tail end of the arrow represents the start of an activity.
The events are represented graphically by circles or nodes at the beginning and the end of activity by arrows.

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Industrial Engineering and Production Management
The assumption in PERT is

A project will always be behind schedule, if left uncorrected
Activities are fixed and can't be changed
Cost of project will always be more than the estimated cost, if no timely corrections are taken
A project can be subdivided into a set of predictable, independent activities

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