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?
A) fewer than 18 seconds
B) greater than or equal to 18 seconds but fewer than 20 seconds
C) greater than or equal to 20 seconds but fewer than 22 seconds
D) greater than or equal to 22 seconds

Question

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?
A) fewer than 18 seconds 
B) greater than or equal to 18 seconds but fewer than 20 seconds 
C) greater than or equal to 20 seconds but fewer than 22 seconds 
D) greater than or equal to 22 seconds

Quizplus · Accepted Answer

To find the standard time for work element 1, we need to calculate the average time for this element. 
Cycle 1: 20 seconds (rating = 5, performed 1 time)
Cycle 2: 22 seconds (rating = 5, performed 1 time)
Cycle 3: 21 seconds (rating = 5, performed 1 time)
Cycle 4: 20 seconds (rating = 5, performed 1 time)

The total time is 83 seconds, and the number of observations is 4, so the average time is 83/4 = 20.75 seconds. 
With an allowance fraction of 20%, the standard time for work element 1 would be:

20.75 + (20% x 20.75) = 24.9 seconds

Since 24.9 seconds is between 20 and 22 seconds, the answer is C, greater than or equal to 20 seconds but fewer than 22 seconds.

Table H.3 A Worker Was Observed for Four Cycles in a Repetitive