Final answer:
Walter Shewhart contributed to the field of operations management through his significant work on statistical quality control, which focused on monitoring and controlling production processes.
Step-by-step explanation:
Walter Shewhart is listed among the important people of operations management because of his contributions to statistical quality control. Shewhart, an engineer, developed control charts and concepts that became foundational for quality management within manufacturing processes.
His work is distinct from other pioneers such as Frederick Taylor, who focused on efficiency through scientific management; Lillian Gilbreth, known for her work in time and motion studies; and the development of the assembly line most notably utilized by Henry Ford. Shewhart's work specifically addressed ways to monitor and control production processes to ensure the quality of the output, which has had a lasting impact on manufacturing industries and the field of operations management.