Using the following data, calculate the average job tardiness.
Job Completion Date Due Date
A 15 12
B 11 24
C 25 22
D 18 19
a) 6 days
b) 1.5 days
c) -2 days
d) -8 days
e) 3 days
Answer: b) 1.5 days
Hint:
Job Completion Date Due Date lateness tardiness
A 15 12 3 3
B 11 24 -13 0
C 25 22 3 3
D 18 19 -1 0
-8 6
-2 1.5