Complete the table, find average lateness, find average completion time, and average number of jobs in the system. Assume all durations are in days and that the jobs are processed at the shop in the order that they arrive (A then B then C then D).
$$\begin{array}{lllll}\text{ Job }& \text{ Process Time }& \text{ Flow Time }& \text{ Due Date }& \text{ Lateness }\\ \text{ A }& 5& & & \\ \text{ B }& 3& & 9& \\ \text{ C }& 2& & 12& \\ \text{ D }& 5& & 4& \\ \text{ Sum }& & & & \\ \text{ (Average) }& 15(3.75)& & \text{ XXXXX }& \end{array}$$

Average Lateness

A measure of the extent to which tasks or deliverables are completed beyond their scheduled completion times, on average.

Average Completion Time

The mean time taken to complete a set of tasks or activities.

Job Processing

A method of manufacturing where goods are produced in discrete jobs, not necessarily in large batches, allowing for customization and flexibility in production.