The average time customers spend waiting and the average time a customer spends in the system:
A) are the same metric.
B) use the same formula.
C) are not considered.
D) are different system metrics.
E) only apply to multi-server systems.

Question

Quizplus · Accepted Answer

The average time customers spend waiting and the average time a customer spends in the system are different system metrics. The time a customer spends in the system includes both waiting time and service time, while the waiting time metric only accounts for the time a customer spends waiting in a queue to be served. These metrics apply to both single-server and multi-server systems.

The Average Time Customers Spend Waiting and the Average Time