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Krajewski SN Supplement H

# Krajewski SN Supplement H - Supplement H Measuring Output...

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Supplement H Measuring Output Rates A. Work Standards 1. Work measurement as a management tool a. Managing processes and value chains b. How they are used 2. Areas of controversy B. Methods of Work Measurement 1. Formal Methods of work measurement 2. Time study method. a. Steps in a time study Examples H.1 and H.3 Step 1. Selecting work elements Step 2. Timing the elements Step 3. Determining sample size Step 4. Setting the standard SN:H-1

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SN:H-2 Supplement H: Measuring Output Rates b. Application H.1: Time Study Method Lucy and Ethel have repetitive jobs at the candy factory. Management desires to establish a time standard for this work for which they can be 95% confident to be within ± 6% of the true mean. There are three work elements involved: Step 1: Selecting work elements. #1: Pick up wrapper paper and wrap one piece of candy. #2: Put candy in a box, one at a time. #3: When the box is full (4 pieces), close it and place on conveyor. Step 2: Timing the elements. Select an average trained worker: Lucy will suffice. Element Initial Observation Cycle Number, Minutes Select Time, t 1 2 3 4 5 6 7 8 9 Wrap #1: 0.10 0.08 0.08 0.12 0.10 0.10 0.12 0.09 0.11 Pack #2: 0.10 0.08 0.08 0.11 0.06 0.98 * 0.17 0.11 0.09 Close #3: 0.27 ... ... ... 0.34 ... ... ... 0.29 * Lucy had some rare and unusual difficulties; don't use this observation.
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Krajewski SN Supplement H - Supplement H Measuring Output...

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