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Operations Management: Processes and Supply Chains, 12th Edition by Larry P. Ritzman, Manoj K. Malhotra, Lee J. Krajewski

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Predetermined Data Method

The predetermined data method eliminates the need for time studies altogether. The analyst divides each work element into a series of micromotions common to a variety of tasks. The analyst then consults a published database that contains the normal times for these micromotions along with modifications for job variables. The normal time for any task can be developed by accessing the database.

One of the most commonly used predetermined data systems is methods time measurement (MTM). Actually, there are several MTM databases, but we focus on the most accurate, MTM-1. In MTM-1, the basic micromotions are reach, move, disengage, apply pressure, grasp, position, release, and turn. The normal times for these micromotions, ...

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