Consequently, if the R chart is out of control, then the control limits on the Xbar chart are meaningless. Further Examples ...

Example of a Quality Control Chart . For example, Bob wants to know if his widget press is creating widgets that are up to standard. He decides to test the density of a random sampling of widgets ...

Control chart- a time-ordered plot of sample statistics, used to distinguish between random and nonrandom variability . Control limits- the dividing lines between random and nonrandom deviations from ...

Youíll learn how to select the right attribute data control chart, and how to create those control charts. These include the NP Chart, the P Chart, the U Chart and the C Chart. To do this you must ...

See "Displaying Multiple Sets of Control Limits". The VREF=, VREFLABELS=, and VREFLABPOS= options are used to display and label the trial limits. You can also pass in the values of the trial limits ...

The control chart for Example 2 (Figure 2A) is for tablet weight of 36 samples of 3 tablets per sample with control limits based on within-sample standard deviation. Figure 2A shows nine OOC signals; ...

Output 41.3.3 shows that the variables _LIMITN_, _ALPHA_, _LCLU_, and _UCLU_ have the special missing value V, indicating that these variables vary with the sample size.. The following statements ...