Question 7.3: Computing a Time Standard A time study of an assembly operat...

Operations Management

Computing a Time Standard

A time study of an assembly operation yielded the following observed times for one element of the job, for which the analyst gave a performance rating of 1.13. Using an allowance of 20 percent of job time, determine the appropriate standard time for this operation.

i Observation	Time, x (minutes)	i Observation	Time, x (minutes)
1	1.12	6	1.18
2	1.15	7	1.14
3	1.16	8	1.14
4	1.12	9	1.19
5	1.15		Total 10.35

n = 9 PR = 1.13 A = .20

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