RMC Hot Topics 9th Edition Flashcards - Quality Management: 31-42
Name some Quality Control tools and techniques.
Checklists and checksheets
Statistical sampling
Questionnaires and surveys
Performance reviews
Root cause analysis
Inspection
Control charts
Cost-and-effect diagrams
Histograms
Scatter diagrams
Meetings
What is a quality checklist?
A list of items to inspect, a list of steps to perform, or a picture of an item to be inspected, with space to note any defects found.
How does a checksheet differ from a quality checklist?
Although a checksheet is a type of checklist, its primary purpose is to keep track of data.
In Control Quality, checklists are used to determine that all required features and functions are included, and that they meet acceptance criteria.
What is statistical sampling?
Inspecting by testing only part of population (a statistically valid sample)
What is the control chart?
What are control limits?
Control charts are used in control quality to help determine if the results of a process are within acceptable limits.
Control limits are the acceptable range of variation on the control chart.
What are the specification limits on a control chart?
What is a mean on a control chart?
Specification limits: the customers expectation or contractual requirements for performance and quality on the project.
Mean: the average, the middle of the range of acceptable variation.
How do we define a process as statistically out of control?
What does out of control mean?
A data point falls outside the upper or lower control limit.
There are nonrandom data points; these maybe within the upper and lower control limits.
What is the rule of seven?
What does it signify?
It refers to a group or series of nonrandom data points that total seven on one side of mean.
The rule of seven tells you that, although none of these points are outside of the control limits, they are not random and the processes out of control.
What is an assignable cause/special cause variation?
An assignable cause or special cause variation signifies that a process is out of control.
If there is an assignable cause or special cause variation, it means a data point, or a series of data points, requires investigation to determine the cause of the variation.
What is a cause-and-effect diagram?
A graphical tool that helps determine the possible root causes of a problem.
It is also called a fishbone, Ishikawa, or why-why diagram.
What is a Pareto chart?
A histogram that arranges the results from most frequent to least frequent to help identify which root causes are resulting in the most problems.
What does a scatter diagram show?
The relationship between two variables and quality of the results.
