Exam 18: Statistical Quality Control

A quality circle studying the problem of incorrect prices on purchase orders identified several potential causes: incorrect information from requesting department,out-of-date catalogs from suppliers,defective computer software,and worker practices in the purchasing department.These potential cause-and-effect relationships are best illustrated by a _______________.

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

An R Chart is to be developed for use in quality control.The average of the ranges is calculated to be 0.60.This was based on several samples of size 7 each.What would the upper control limit be?

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?

If no variation occurred between manufactured items,the resulting points on a control chart would form a horizontal line.

A graph that plots the proportions of items in noncompliance for multiple samples is called a(n)_______.

Ophelia O'Brien,VP of Consumer Credit of American First Banks (AFB),is designing a p chart to monitor the default rate on personal loans at the AFB member banks.Her data includes the proportion in default for 30 samples of personal loans.Each sample contains 50 loans,and the average of the 30 proportions is 0.05.The upper control limit for Ophelia's p chart is _____________.

Jack Joyner,Director of Quality Control at Covington Castings (CC),is designing a c chart to monitor the number of nonconformances per aluminum casting produced at CC.The total number of nonconformances for 26 castings is 91.The lower control limit for Jack's c chart is ___________.

Failure Mode Effect Analysis is best described as _________.

According to the following Pareto chart,the Pareto principle would suggest a quality improvement team focus their efforts on which of the following complaints?

Quality control can be undertaken in two distinct ways: after-process control and before-process control.

A p Chart is to be developed for use in quality control.The value of p is calculated to be 0.54.The sample size is 249.What would the upper control limit be?

A company that uses benchmarking as a quality improvement practice will ________.

Upper and lower control limits are usually based upon _______.

An R Chart is to be developed for use in quality control.The average of the ranges is calculated to be 0.45.The sample sizes were 9 each.What would the lower control limit be?

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

Edward Deming is a quality guru whose principles of quality management can be summarized through four basic tenets,or "Absolutes".

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 inches,and mean of the 26 ranges is 0.15 inch.The lower control limit for her chart is ____.

Ophelia O'Brien,VP of Consumer Credit of American First Banks (AFB),is designing a p chart to monitor the default rate on personal loans at the AFB member banks.Her data includes the proportion in default for 30 samples of personal loans.Each sample contains 50 loans,and the average of the 30 proportions is 0.05.The lower control limit for Ophelia's p chart is _____________.

Higher output wattage means higher quality to some consumers of audio amplifiers.Among Garvin's five quality types,this is an example of ______________.