Exam 18: Statistical Quality Control

A manufacturer of washing machines promotes lower water usage per load cycle when compared to the average brand.Among Garvin's five quality types,this is an example of ________.

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 lower control limit be?

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

.Jake Flanaghan,Vice President for inpatient pharmacy,at Great Atlantic Medical Center,is designing a c chart to monitor the number of inpatient medication errors that occur each month.The total number of medication errors for January - December last year was 37.The lower control limit for Jake's c 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 upper control limit for Jack's c chart is ___________.

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

Jake Flanaghan,Vice President for inpatient pharmacy,at Great Atlantic Medical Center,is designing a c chart to monitor the number of inpatient medication errors that occur each month.The total number of medication errors for January - December last year was 37.The centerline for Jake's c 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 centerline for Ophelia's p chart is _____________.

A c chart used for statistical quality control is a chart that shows the count of defects in the process output.

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 upper control limit for her chart is ________.

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

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 ___________.

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 inches,and mean of the 26 ranges is 0.15 inch.The centerline for her R chart is ____.

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.

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

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

Which of the following statements best describes Design for Six Sigma?

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 after-process quality control.