Industrial Engineering and Production Management
Work sampling is applied for

All of these
Estimating the percentage of the time consumed by various job activities
Estimation of the percentage utilization of machine tools
Finding out time standards, specially where the job is not repetitive and where time study by stop watch method is not possible

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Industrial Engineering and Production Management
Work study is mainly aimed at

Developing the standard method and standard time of a job
Economizing the motions involved on the part of the worker while performing a job
Determining the most efficient method of performing a job
Establishing the minimum time of completion of a job

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