The objective of a statistical process control (SPC) system is to
A. assess customer expectations.
B. eliminate natural variations.
C. provide a statistical signal when assignable causes of variation are present.
D. provide a statistical signal when natural causes of variation are present. C. provide a
statistical signal when assignable causes of variation are present
The R-chart
A. generally uses control limits set at plus or minus 2 standard deviations of the distribution,
rather than plus or minus 3 which is commonly used on the x-bar chart.
B. is used to measure changes in the central tendency.
C. control limits are computed using sample standard deviations.
, D. is used to indicate gains or losses in uniformity. D. is used to indicate gains or losses in
uniformity
Which type of control chart should be used when it is possible to have more than one mistake
per item?
A. R-chart
B. c-chart
C. p-chart
D. x-bar chart B. c-chart
What is the major difference in focus between a location decision in the service sector vs. the
manufacturing sector?
A. There is no difference in focus.
B. The focus in manufacturing is on labor, while the focus in service is on raw materials.