Which tool is NOT part of the Seven Tools of Statistical Process Control?

The Seven Tools of Statistical Process Control (SPC) are a set of quality tools that are primarily used to analyze and improve processes. These tools include control charts, fishbone diagrams, and Pareto charts, among others.

Gantt charts, on the other hand, are not included in the Seven Tools of SPC. They are primarily used for project management to illustrate a project schedule, showing the start and finish dates of various elements or tasks. Their focus is on time management and task scheduling rather than on process control or quality improvement.

By understanding the specific purpose and application of each tool, one can see that the correct answer highlights the distinction between tools meant for quality control versus those made for project management.