Exam 18: Statistical Quality Control

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

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 ___.

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

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

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

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 ___.

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

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.

If no variations occurred between manufactured items, the resulting control charts would be excellent.

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 ___.

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 ___.

Ophelia O'Brien, VP of Consumer Credit of Credit First Banks (CFB), is designing a p chart to monitor the default rate on personal loans at the CFB member banks.Her data includes the proportion in default for 30 samples of personal loans.Each sample contained 50 loans, and the average of the 30 proportions is 0.05.The centerline 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 centerline for Jack's c chart is ___.

Which of the following is not usually an activity that would be included in a flowchart?

A lower fat content in meat means higher quality to many consumers.Among Garvin's five quality types, this is an example of ___.

Imagine a cause-and-effect diagram had five elements listed at the end of each line, either at the head of the diagram or at the end of each "bone" of the diagram.These elements were transportation, enforcement, late arrivals, policy, and attitude.Of these, which would be most likely to be at the head of the diagram?

Which of the following is not a quality control diagnostic technique?

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

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?

A scatter diagram is a graphical mechanism for examining the relationship between two variables.