The queuing theory determines how long a customer has to wait on service. Most businesses use this theory to keep customers happy.
Businesses have different peak hours. Employers need to know how many people to staff in order to serve their customers in a timely manner. Waiting for too long can cause consumers to become irritated and even lose the company business.
The theory is a math-based equation to determine when the busiest hours occur and how long a customer should wait. There are three parts to the theory: when the customers arrive, when they get help, and how they leave the store.