Quality control is a process by which entities review and ensure the quality of all factors involved in production. It requires creating an environment where management and employees strive for perfection. Quality control benefits include encouraging quality consciousness, satisfying consumers, effective resource utilization, increased goodwill, and increased sales. Control charts are a statistical tool used to determine if a manufacturing process is in a state of control. There are different types of control charts including P, C, U, X, and S charts.