Cost of Quality, Type of Quality Control Measures Flashcards
(Appraisal/prevention) Investments made to keep nonconforming products from occurring and reaching the customer.
(Appraisal/prevention) Associated with efforts to ensure conformance to requirements, generally through measurement and analysis of data to detect non-conformances.
Prevention
Appraisal
Prevention and appraisal are cost of (conformance/non-conformance)
conformance
(Internal/External failure) Costs of unsatisfactory quality found before the delivery of a product to the customer.
(Internal/External) failure Costs incurred after poor-quality products reach the customer.
Internal
External
Internal/External Failure are cost of (conformance/non-conformance)
Non-conformance
A methodology for monitoring a process to identify special causes of variation and signal the need to take corrective action when appropriate.
Statistical Process Control
The control chart is also called a ____________ chart.
Shewhart
- The control chart is a graph used to study how a process ________ over time.
- Data are plotted in _____ order.
- A control chart always has (upper/lower/central) line for the average (CL), (upper/lower/central) line for the upper control limit (UCL), and (upper/lower/central) line for the lower control limit (LCL).
- These lines are determined from ________ data. By comparing current data to these lines, you can draw conclusions about whether the process variation is consistent ~ in control or is unpredictable ~ out of control, affected by special causes of variation
- changes
- time
- central, upper, lower
- historical
- Control charts for variable data are used in _____.
- The top chart monitors the (range/average), or the CENTERING of the distribution of data from the process.
- The bottom chart monitors the (range/average), or the WIDTH of the distribution.
- If your data were shots in target practice, the (range/average) is where the shots are clustering, and the (range/average) is how tightly they are clustered.
- pairs
- average
- range
- average, range
Unlike variable charts that are used in pairs, Control Chart for Attributes are used (separately/individually/both)
both separately and individually