Exam 18: Statistical Quality Control

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 lower control limit for Nels's p chart is ___.

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

One definition that captures the spirit of most quality efforts in the business world is that quality results when a product delivers what is stipulated for it in its specifications.

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 centerline for Nels' c chart is ___.

Compare various tools that identify,categorize,and solve problems in the quality improvement process,including flowcharts,Pareto analysis,cause-and-effect diagrams,control charts,check sheets,histograms,and scatter charts.

A graph which plots the number of nonconformances per item for multiple samples is called a (n)___.

A plot of the sample ranges over regular time intervals is called a (n)___.

The Six Sigma approach essentially calls for the process to approach defect-free status.

According to Garvin,product quality 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 lower 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 lower control limit for her chart is ___.

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

A schematic representation of all the activities and interactions that occur in a process is called a Pareto chart.

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 centerline for Jack's c chart is ___.

An chart is being developed using 25 samples of size 8 each.The average of 25 sample means is 6.20.The average of the 25 ranges is 0.30.The lower control limit 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 upper control limit for Jack's c 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 R chart is ___.

Two general types of control charts are (1)control charts for manufactured items and (2)control charts for services.

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?

Two general types of control charts are (1)control charts for measurements and (2)control charts for compliance items.