Industrial Engineering and Production Management
String diagram is used

For checking the relative values of various layouts
Where processes require the operator to be moved from one place to another
All of these
When a group of workers are working at a place

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Industrial Engineering and Production Management
Travel charts provide

An idea of the flow of materials at various stages
The information for changes required in rearranging material handling equipment
An approximate estimate of the handling which must be done at a particular station
A compact estimate of the handling which must be done between various work sections

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Industrial Engineering and Production Management
Slack represents the difference between the

Normal allowable time and the latest expected time
Proposed allowable time and the earliest expected time
Latest allowable time and the earliest expected time
Latest allowable time and the normal expected time

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