The following jobs must be processed in the Super Clean motor shop. Assume that the company operates seven days per week. Using FCFS as the priority rule, calculate average job tardiness.
Job Arrival Comp Due Date
A Nov. 1 8 16
F Nov. 5 12 10
E Nov. 6 12 15
B Nov. 4 12 11
C Nov. 2 20 21
D Nov. 3 5 13
a) 0
b) 6
c) .5
d) -2.833
e) -8
Answer: c) .5
Hint:
Job Arrival Comp Due Date Lateness Tardiness
A Nov. 1 8 16 -8 0
C Nov. 2 20 21 -1 0
D Nov. 3 5 13 -8 0
B Nov. 4 12 11 1 1
F Nov. 5 12 10 2 2
E Nov. 6 12 15 -3 0
-17 3
-2.83333 0.5