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Question

A Methods and Measurements Analyst needs to develop a time standard for a certain task. The task involves use of ruler, square, and portable electric saw to mark and cut the "notch" in a rafter (a standard carpentry task of home construction). In a preliminary study, he observed one of his workers perform this task five times. The observations were made in an air-conditioned, well-lighted training facility, at ground level, with all tools and equipment clean and readily available.


Observation: 1 2 3 4 5
Task time (seconds): 82 74 80 83 76

a. What is the actual average time for this task?

b. What is the normal time for this task if the employee worked at a 20% faster pace than is typical for adequately trained workers?

c. What is standard time for this task if allowances are 8% constant and 6% variable?

d. If the analyst then thought more carefully about his experiment, and decided that the variable allowances needed to be increased to match the real (outside, unair-conditioned) work environment, and that the proper variable allowance was not 6% but 12%, what is the revised standard time?

Answer

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