Statistical Process Control uses diagrams called "Control Charts." These charts depict horizontal, parallel lines to represent ______________ standard deviations.

Related MCQs

• When data is plotted on the control charts, the data is of two types: R and -bar. The R data represent points of a ______________ while the X-bar data represent points of a (n) ______________.
• Statistical Process Control is used in quality programs to determine whether repetitive operations meet predictable standards. The process uses ______________ to permit accurate monitoring of the operation.
• X bar charts are uses to control the ______________ of a process.
• What statistical procedure is used to assess the statistical significance of the main effects and the interaction(s) in a factorial design?
• Statistical sampling is a method to determine the conformance to requirement for some element or product of a project. The advantage of statistical sampling is that it ______________.
• Trend charts reflect the relative status of a program. Trend charts are effective means of ______________.
• Identify the charts which might give an indication of process going out of control (before the process has actually changed)
• In a study, subjects are randomly assigned to one of three groups: control, experimental A, or experimental B. After treatment, the mean scores for the three groups are compared. The appropriate statistical test for comparing these means is:
• In a study, subjects are randomly assigned to one of three groups: control, experimental A, or experimental B. After treatment, the mean scores for the three groups are compared. The appropriate statistical test for comparing these means is:
• Consider that for a process s bar (average standard deviation of 50 samples each of size 4) is found to be 10.04. The value of c4 (corresponding to sample size of .4) is .92. What is the estimated value of process standard deviation?