| Assignable Variation | Deviation in the output of a process that can be clearly identified and managed.
|
 |
|
|
| Attributes | Quality characteristics that are classified as either conforming or not conforming to specifications.
|
|
|
|
| Capability Index | Ratio of the range of values produced by a process divided by the range of values allowed by the design specification.
|
|
|
|
| Common Variation | Deviation in the output of a process that is random and inherent in the process itself.
|
|
|
|
| Statistical Process Control | Techniques for testing a random sample of output from a process to determine whether the process is producing items within a prescribed range.
|
|
|
|
| Upper and Lower Specification or Tolerance Limits | Range of values in a measure associated with a process that are allowable given the intended use of the product or service.
|
|
|
|
| Variables | Quality characteristics that are measured in actual weight, volume, inches, centimeters, or other measures.
|