The upper specification limit of a product is 20.05 mm and the lower specification limit of the same product is 19.95 mm. The standard deviation is 0.25 mm. What is the value of the process capability index Cp?

Control charts are graphs that study how a process changes over time. They are also known as Shewhart charts or Statistical Process Control Charts (SPCC).  Control charts have a central line for the average, an upper line for the upper control limit, and a lower line for the lower control limit. These lines are determined from historical data.  Process capability is a quality control measure that determines if a process can meet customer requirements and expectations. It is a quantifiable comparison of the Voice of the Customer (specs, requirements, or expectations of your customer) and the... Show more

Control charts are graphs that study how a process changes over time. They are also known as Shewhart charts or Statistical Process Control Charts (SPCC). 

Control charts have a central line for the average, an upper line for the upper control limit, and a lower line for the lower control limit. These lines are determined from historical data. 

Process capability is a quality control measure that determines if a process can meet customer requirements and expectations. It is a quantifiable comparison of the Voice of the Customer (specs, requirements, or expectations of your customer) and the Voice of the Process (control limits). 
 

Topics include: TQMR Statistics, Variables Control Charts, Process Capability, & Attributes Control Charts.
 

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