In a stopwatch time study, the number of cycles that must be timed is a function of:
A)the variability of observed times
B)the desired accuracy for the estimated job time
C)the desired confidence for the estimated job time
D)all of the above
E)none of the above

Question

Quizplus · Accepted Answer

All three factors listed (variability of observed times, desired accuracy, and desired confidence) influence the number of cycles that must be timed in a stopwatch time study. In order to obtain accurate and reliable estimates of job time, the number of cycles must be chosen based on the level of variability, accuracy, and confidence desired. Therefore, choice D is the best answer.

In a Stopwatch Time Study, the Number of Cycles That