Short day today, apparently. Final exams next week.Chapter 17: Statistical Quality Control
Quality control is any tactic or method used to keep service or output of a business at acceptably high levels.
Statistical Process Control uses numerical and probability tools to help control processes and produce consistent goods and services.
There is a model for what causes defects or problems called the fishbone method. It attributes all possible problems to four potential causes, the Four Ms.
- Machine
- Production equipment needs normal maintenance
- Maybe the equipment is wrong for the job.
- Equipment is broken and needs repair or replacement
- Manpower
- Additional training needed
- Motivation or morale is poor
- Employees are overworked
- Method
- Some aspect of how the work is done is wrong.
- Mismatch between capabilities and plan or desires and plan
- Materials
- Poor material
- Unreliable supply
Statistical Process Control is used to ensure your process is making products to the required standards. If it’s not, the SPC method should give you the ability to monitor, measure, and correct quality problems. Generally, the data is graphed with upper and lower limits for the process we desire to control.
The data can be charted in various ways.
This Sunday, there will be a quiz over chapters 13 and 14.
Final Exam will be next week, April 28 during regular class time. Need a scantron for it. The test will be comprehensive. 25 Questions. Weighted towards the later chapters.