Tag: statistical process control

So what is the real difference when looking at Cpk and Sigma Level? If you’re new to Six Sigma, there is no shortage of acronyms and calculations to keep in mind as you work on your knowledge base. Both Cpk and Sigma Level are valuable tools when looking at your processes and production. […]

Upper Control Limit Overview: What Is the Upper Control Limit (UCL)? A control chart consists of several parts. It has two control limits and an average line. The bottom dashed line is called the lower control limit (LCL).  The solid middle line is the average of the statistic being plotted. The top dashed […]

Short production runs are a necessity in high-mix, low-volume manufacturing environments. The trend in manufacturing has been toward smaller production runs, with production runs – as well as products – tailored to the individual customer’s needs. Although this minimizes inventory and improves responsiveness to the customer, it complicates the application of statistical process control (SPC). Classical […]

Statistical process control (SPC) is the application of statistical methods to identify and control the special cause of variation in a process. Control charts, in theory, are used in product and process development to analyze processes. When a process is shown to be in control in both an average and range chart the process can […]

Statistical process control (SPC), despite sounding esoteric, is a subject that every process owner and worker should – and can – understand, at least at a high level. Knowing whether a process is in control and stable is paramount to producing a product or service that meets customer needs. In this hour-long Minitab training course […]

Got best practices? If you’ve been attending (or separately purchasing components of) the iSixSigma “Best of the Best” Webinar Series, you are on your way. These hour-long sessions deliver process improvement secrets from some of the world’s most respected companies. The first two sessions in the series featured best practices from MoneyGram International (“MoneyGram’s Transformation […]

iSixSigma’s “Best of the Best” Webinar Series continues on Tuesday, June 21, when Shannon Coursey leads an hour-long session titled “Applying SPC Concepts to Better Understand Systems Delivery Performance”. The webinar will be held from 11 a.m. to 12 noon Eastern and the cost is $49 (Register Now!)

A true control strategy should be aligned with the process’s statistically based control limits.

Statistical quality control (SQC) and statistical process control (SPC) are two powerful tools, which have different goals and requirements for successful application. By using a methodology that combines the strengths of both approaches, it is possible to overcome the individual weaknesses of each one. The volume of calculations required by this technique prohibits manual data […]