August 2014
Intermediate to advanced
166 pages
3h 28m
English
Content preview from Statistical Process Control for Managers
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Basic Control Charts for Variables
The idea of control involves action for the purpose of achieving a desired end.
—Walter Shewhart
Data used to create SPC control charts can be divided into two basic types: attributes and variables. Attribute data are go/no-go or count information. Examples include the number of defective units, the number of complaints received from dissatisfied customers, and the number of patients whose meals were delivered more than 15 minutes late. Control charts for attribute data will be the subject of Chapter 6. Variable data are continuous measurement information. Examples include measurements of height, weight, length, concentration, and pressure (psig). Control charts for variable data are the subject of ...