Exam 18: Statistical Quality Control

If a process is in control,less than 0.3% of all the points that represent the process output such as the average measurement or the proportion defective should be beyond the upper and lower control limits.

Inspecting the attributes of a finished product to determine whether the product is acceptable,is in need of rework,or is to be rejected is called in-process quality control.

Nels Neugent,Purchasing Manager at Pacific Medical Center,is designing a c chart to monitor the number of nonconformances per purchase order issued at Pacific.The total number of nonconformances for 30 purchase orders is 45.The lower control limit for Nels's c chart is ___.

Nels Neugent,Purchasing Manager at Pacific Medical Center,is designing a p chart to monitor the proportion of defective purchase orders issued at Pacific.He has the proportions defective for 22 samples of purchase orders.Each sample contained 150 purchase orders,and the average proportion defective is 0.08.The upper control limit for Nels's p chart is ___.

A p chart is to be developed for use in quality control.The value of p is calculated to be 0.04.The sample size is 100.What would the lower control limit be?

Sarah Soliz,Director of Quality Programs,is designing and R charts for the rod shearing process at Stockton Steel.She has 26 samples of rod length,and each sample included measurements of 5 rods.The mean of the 26 sample means is 112 centimetres,and mean of the 26 ranges is 0.15 centimetres.The upper control limit for her chart is ___.

A graph which displays computed means for a series of small random samples over a period of time is called a (n)___.

Which of the following quality control chart conditions is an indicator that the process is,potentially,out-of-control?

Explain the meaning of quality in business,compare the approaches to quality improvement by various quality gurus and movements,and compare different approaches to controlling the quality of a product,including benchmarking,just-in-time inventory systems,Six Sigma,lean manufacturing,reengineering,failure mode and effects analysis,poka-yoke,and quality circles.

A manufacturer of automobile tires promotes a tread life of at least 80,000 kilometres for its Poly-Radial tires.Among Garvin's five quality types,this is an example of ___.

A p chart is to be developed for use in quality control.The value of p is calculated to be 0.04.The sample size is 100.What would the upper control limit be?

A control chart is used to control the flow of materials into a process.

Pareto chart is a diagnostic tool that displays possible causes of a quality problem and the interrelationships among the causes.

A collection of strategies,techniques,and actions taken by an organization to assure themselves that it is producing a quality product or service is called ___.

A p chart is to be developed for use in quality control.The value of p is calculated to be 0.05.The sample size is 50.What would the upper control limit be?

According to Garvin,transcendent quality implies that a product ___.

An R Chart is to be developed for use in quality control.The average of the ranges is calculated to be 0.30.The samples sizes were 6 each.What would the lower control limit be?

Which of the following quality control chart conditions is an indicator that the process is potentially out-of-control?

Sarah Soliz,Director of Quality Programs,is designing and R charts for the rod shearing process at Stockton Steel.She has 26 samples of rod length,and each sample included measurements of 5 rods.The mean of the 26 sample means is 112 centimetres,and mean of the 26 ranges is 0.15 centimetres.The upper control limit for her R chart is ___.

Sarah Soliz,Director of Quality Programs,is designing and R charts for the rod shearing process at Stockton Steel.She has 26 samples of rod length,and each sample included measurements of 5 rods.The mean of the 26 sample means is 112 centimetres,and mean of the 26 ranges is 0.15 centimetres.The centerline for her chart is ___.