Exam 23: Measuring Output Rates

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?

A predetermined data approach to time standards can be completed only after actual production begins.

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)?

Why is a sampling schedule important in a work sampling study?

Which of the following is TRUE regarding the MTM approach?

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: -How many more observations must be made in order to estimate the select time for Element 1 if the company wishes to be within 6% of the actual value with 95% confidence?

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 Element 4 that is within 5% with 95% accuracy?

Which one of the following statements about the time study method 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)?

Why would the elemental standard data approach be used instead of a work sampling study when developing a time standard?

A larger sample size is required when the job being studied is shorter in average duration.

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 1.10 to the worker and the company employs an allowance factor of 20%.What is the standard time for Element 4?

A larger sample size is required when the job being studied is more consistent in completion time.

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 standard time for work element 1?

As the sample size increases in a work sampling study,the maximum error decreases.

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.

An analyst using a time study approach:

A time study analyst is determining the standard time for a work element.The select time is 6.0 minutes,and the standard deviation of the select time is 2.2 minutes,based on a pilot sample of 20 observations.What is the appropriate sample size if the estimate for the select time is to be within 10 percent of the true average time 95 percent of the time (z = 1.96)?

The work measurement technique that breaks down tasks into a series of generic micro-motions is the:

The ________ is a measurement found by multiplying the select time,the frequency of work,and the rating factor.