What is Statistical Quality Control (SQC)?
The general category of statistical tools used to evaluate organizational quality.
What are Descriptive Statistics?
Statistics used to describe quality characteristics and relationships.
What is Statistical Process Control (SPC)?
A statistical tool that involves inspecting a random sample of the output from a process and deciding whether the process is producing products with characteristics that fall within a predetermined range.
What is Acceptance Sampling?
The process of randomly inspecting a sample of goods and deciding whether to accept the entire lot based on the results.
What are Common Causes of Variation?
Random causes that cannot be identified.
What are Assignable Causes of Variation?
Causes that can be identified and eliminated.
What is the Mean (average)?
A statistic that measures the central tendency of a set of data.
What is Range?
The difference between the largest and smallest observations in a set of data.
What is Standard Deviation?
A statistic that measures the amount of data dispersion around the mean.
What does Out-of-control mean?
The situation in which a plot of data falls outside preset control limits.
What is a Variable?
A product characteristic that can be measured and has a continuum of values (e.g., height, weight, or volume).
What is an Attribute?
A product characteristic that has a discrete value and can be counted.
What is Process Capability?
The ability of a production process to meet or exceed preset specifications.
What are Product Specifications?
Preset ranges of acceptable quality characteristics.
What is the Process Capability Index?
An index used to measure process capability.
What is Six Sigma Quality?
A high level of quality associated with approximately 3.4 defective parts per million.
What is conformance to specifications?
How well a product or service meets the targets and tolerances determined by its designers.
What is fitness for use?
A definition of quality that evaluates how well the product performs for its intended use.
What does value for price paid mean?
Quality defined in terms of product or service usefulness for the price paid.
How is support services defined in terms of quality?
Quality defined in terms of the support provided after the product or service is purchased.
What are psychological criteria in quality assessment?
A subjective definition that focuses on the judgmental evaluation of what constitutes product or service quality.
What are prevention costs?
Costs incurred in the process of preventing poor quality from occurring.
What are appraisal costs?
Costs incurred in the process of uncovering defects.
What are internal failure costs?
Costs associated with discovering poor product quality before the product reaches the customer.