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Western Kentucky University

CWD: Courses: Quality Assurance Training

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Review of Control Chart Construction and Analysis

Session Format:

8 Hours Total (Two 4-Hour Sessions)


Follow–up training on a subject is important for employees to retain what they have learned. Practice in SPC, such as daily charting, only reviews the HOW of SPC. In order for employees to understand WHY SPC is important, a review of the fundamentals of statistics and SPC techniques should be presented on a regular basis. This session concentrates on SPC chart construction and analyzing SPC data.


The participant will review: (1) the logic of SPC concepts as they relate to the manufacturing process and quality control, (2) mean, variation, sampling, and control charting procedures, (3) origins of control limits and specifications, (4) what constitutes an unusual control chart pattern, and (5) the relationship of control charts to the idea of process capability.

Content Outline

  • Overview of the purpose of SPC and statistical concepts
  • A review of control chart construction and control limits
  • The relationship between control limits and specifications
  • How control limits are derived
  • What constitutes unusual control chart patterns
  • Identifying local versus system causes of variability
  • The relationship of control charts to the concept of process capability (CPK)

Who Should Attend

This seminar is intended for employees responsible for production and quality improvement who have had prior SPC training but need refreshing of skills or understanding.

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 Last Modified 9/24/14