Exam 25: Supplement H Measuring Output Rates

Perform a time study on yourself as you answer this question. Explicitly record your data, determine how long it will take to complete this exam and comment on the accuracy of your estimate.

The ________ is time added to adjust for factors such as fatigue or equipment malfunction.

Table H.3 A worker was observed for four cycles in a repetitive task. The observer recorded the following times, in seconds, using the continuous method. The ratings for each element and frequency it is performed are also indicated in the table. The allowance fraction is 20 percent. -Use the information in Table H.3. What is the normal time for work element 2?

Which one of the following statements about work measurement is True?

An industrial engineer is conducting a time study for a work element. The select time is 7.5 minutes, and the sample standard deviation of the observed time is one minute. What is the appropriate sample size if the estimate is to be 3 percent of the True average time 95 percent of the time (z = 1.96)?

Timing the work elements using the snap-back method requires:

Work standards would not be helpful for management in which area?

During a time study, the following times were observed for a particular job using the continuous (non-snapback) method: 22, 51, 72, 98, 128, and 150 seconds. There is only one element per cycle. The sample standard deviation of the observed times has already been computed as 3.9 seconds. If an estimate for the average time that is within 4 percent of the True long-range average 95 percent (z = 1.96) of the time is desired, how many additional observations are needed?

Which one of the following statements about the time study method is True?

A worker was observed for four cycles of a repetitive operation. The observed times for work elements are 11, 10, 8, and 11 seconds, respectively. What sample size is appropriate for estimating the time for this work element within + 3 percent of the True mean time with 95 percent confidence (z = 1.96)?

A work study has been conducted on a new operation with three work elements. The following times, in minutes, were obtained using the continuous method. a. What is the normal time for this operation? b. If an allowance of 20 percent is used, what is the standard time for this task?

The snap-back method of time study resets the stopwatch to zero on the completion of each work element.

When using a time study approach, the standard time is the:

The gentleman farmer recorded the time it took to feed and water his chickens and collect eggs each morning. He has done this several times, so he assigns himself a rating of 1.15. The allowance factor for this endeavor is 5%. What is the normal time for this job element?

Elemental standard time data cannot be used to develop time standards for new work before production begins.

Table H.1 A worker was observed for four cycles in a repetitive task that contains four distinct elements. The observer recorded the following items in seconds, using the snap-back method: -The observer assigned a performance rating factor of 1.15 to the worker and the company employs an allowance factor of 20%. How many more observations must be made in order to develop an estimate of the select time for all elements of the job that are within 3% with 95% accuracy?

The gentleman farmer recorded the time it took to feed and water his chickens and collect eggs each morning. He has done this several times, so he assigns himself a rating of 1.15. The allowance factor for this endeavor is 5%. What is the select time for this job?

The work measurement process creates labor standards based on the judgment of skilled observers.

A supermarket administrator suspects that idle time is about 20 percent for the cashier and 15 percent for the office clerk. If the administrator wants a 95 percent confidence level (z = 1.96) and a degree of precision of + 0.05 for both cashier and office clerk, how many total observations are needed?

The advantage of using the predetermined data approach for setting standards is that: