What are the pros and cons for using work sampling to establish performance standards?
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What are the pros and cons for using work sampling to establish performance standards?
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- What situations call for the use of work sampling instead of time study?What are the trade offs in choosing between time study and work sampling for work measurement.Discuss the disadvantages of work sampling. Would you want data gathered in the work sampling process to be used by your supervisor for your salary and performance review? Why or why not?
- Each year, Lord & Taylor, Ltd., sets up a giftwrapping station to assist its customers with holiday shopping. Preliminary observations of one worker at the stationproduced the following sample time (in minutes per package):3.5, 3.2, 4.1, 3.6, 3.9. Based on this small sample, what number of observations would be necessary to determine the truecycle time with a 95% confidence level and an accuracy of{5%?. Given the following information, determine the sample sizeneeded if the standard time estimate is to be within 5 percent ofthe true mean 97 percent of the time. Work Element Standard Deviation (minutes) Mean Observed Time (minutes)l 0.20 1.102 0.10 0.803 0.15 0.904 0.10 1.00A hospital administrator thinks that the X-ray equipment is only in use about 20 percent of the time. What number of observations in a work sampling study would be needed to estimate the true percentage of time to within 5 percent with a confidence of 98 percent?
- A Methods and Measurements Analyst needs to develop a time standard for a certain task. The task involves use of a 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 performing this task five times. The observations were made in an air-conditioned, well-lit 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 88 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 10% faster pace than is typical for adequately trained workers? (c) What is standard time for this task if allowances sum to 12%? (d) If the analyst then thought more carefully about his experiment and decided that the allowances needed to be increased to match the real (outside, not…What role does data collection and analysis play in work measurement?A random work sample of o pe rators taken over a160-hour work month a t Tele-Marketing, Inc., has produced thefollowing results. What is the percentage of time spent working?