The following statements create a p chart displaying both sets of control limits: title 'p Chart with Revised Limits for Failed Circuits'; symbol v=dot c=salmon; proc shewhart data=circ_one ...

Control charts that display attribute data count the number of items or occurrences in a sample and assign as pass/fail, yes/no or presence/absence of a defect.

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.

This example uses the GPLOT procedure and the OUTLIMITS= data set FAILLIM2 from the previous example to plot an OC curve for the p chart shown in Output 38.4.3. The OC curve displays (the probability ...

Control charts for monitoring the process mean μ and process standard deviation σ are often based on samples of n > 1 observations, but in many applications individual observations are used (n = 1).

The choice of control chart parameters-sample size, sampling interval, and control limits-is considered from an economic point of view. A general process model is considered, and the hourly cost ...