Setting Options

Option Name	Description
Control Limits
Method	specifies whether to compute the control limits by using the current input data set or to compute the control limits from a different data set. If you use the current input data, you can set the Limits based on option. If you want to compute the data from a different data set, select Use stored limits. Then select the data set to use. The data set that you select must be a LIMITS= data set. For more information about the variables that are required in a LIMITS= data set, see the procedure documentation for the chart that you are creating. In the Control Charts task, you can create this data set by selecting the Save control limits check box on the Output tab.
Limits based on	specifies the width of the control limits as a multiple of the standard error (sigma) of the summary subgroup statistic that is plotted on the chart. The width must be positive. The default multiple is 3.
Tests for Special Causes Note: These tests are available only when you are computing the control limits from the current data set and either of these conditions is met: Three sigma is selected in the Limits based on drop-down list. k sigma is selected in the Limits based on drop-down list and the value for the multiple standard error is 3.
Show zones A, B and C	adds lines that delineate zones A, B, and C for the selected tests.
Specify Tests
You can select from these tests: One point outside control limits Nine points in a row on one side of central line Six points in a row increasing/decreasing Fourteen points alternating up and down Two of three points in a row in zone A Four of five points in zone B or beyond Fifteen points in a row in zone C Eight points in a row with no points in zone C
Chart Options
Display markers for subgroup points	adds markers to indicate the subgroup points.
Display vertical needles	connects plotted points to the central line with vertical line segments.
Tabular Output
Display table of points that are out of control or violate tests	creates a table that lists the subgroups for which a test is positive or the observations are outside the control limits. Each row of the table corresponds to a subgroup. For each subgroup, the table shows the sample size and the upper and lower control limits.