PROC SHEWHART: Summary of INSET Keywords

The SHEWHART Procedure

Summary of INSET Keywords

All keywords available with the SHEWHART procedure’s INSET and INSET2 statements request a single statistic in an inset, except for the NTESTS, NTESTS2 and DATA= keywords. The NTESTS and NTESTS2 keywords each require a list of indexes specifying the tests for special causes whose counts of positive results are to be displayed:

inset ntests 1 2 3 4;
inset ntests2 1 to 4;

For each of the requested tests, the number of positive results for the test is displayed in the inset. So if tests 1 through 4 are requested the results occupy four lines in the inset.

The DATA= keyword specifies a SAS data set containing (label, value) pairs to be displayed in an inset. The data set must contain the variables _LABEL_ and _VALUE_. _LABEL_ is a character variable whose values provide labels for inset entries. _VALUE_ can be character or numeric, and provides values displayed in the inset. The label and value from each observation in the DATA= data set occupy one line in the inset. Figure 13.43.7 shows an inset containing entries from a DATA= data set.

Table 13.82 Summary Statistics
Keyword	Description
DATA=	(label, value) pairs from SAS-data-set
LCL	primary chart lower control limit
MEAN	estimated or specified process mean
N	nominal subgroup size
NMIN	minimum subgroup size
NMAX	maximum subgroup size
NOUT	number of subgroups outside control limits on primary chart
NLOW	number of subgroups below lower control limit on primary chart
NHIGH	number of subgroups above upper control limit on primary chart
NTESTS	number of positive results of tests for special causes on primary chart
STDDEV	estimated or specified process standard deviation
UCL	primary chart lower control limit

Table 13.83 Secondary Chart Summary Statistics
Keyword	Description
LCL2	secondary chart lower control limit
MEAN2	mean of subgroup ranges or standard deviations
NOUT2	number of subgroups outside control limits on secondary chart
NLOW2	number of subgroups below lower control limit on secondary chart
NHIGH2	number of subgroups above upper control limit on secondary chart
NTESTS2	number of positive results of tests for special causes on secondary chart
UCL2	secondary chart upper control limit

Table 13.84 Specification Limits
Keyword	Description
LSL	lower specification limit
USL	upper specification limit
TARGET	target value

Table 13.85 Capability Indices and Confidence Limits
Keyword	Description
CIALPHA	$\text{[math]}$ value for computing capability index confidence limits
CP	capability index $\text{[math]}$
CPLCL	lower confidence limit for $\text{[math]}$
CPUCL	upper confidence limit for $\text{[math]}$
CPK	capability index $\text{[math]}$
CPKLCL	lower confidence limit for $\text{[math]}$
CPKUCL	upper confidence limit for $\text{[math]}$
CPL	capability index CPL
CPLLCL	lower confidence limit for CPL
CPLUCL	upper confidence limit for CPL
CPM	capability index $\text{[math]}$
CPMLCL	lower confidence limit for $\text{[math]}$
CPMUCL	upper confidence interval for $\text{[math]}$
CPU	capability index CPU
CPULCL	lower confidence limit for CPU
CPUUCL	upper confidence limit for CPU

You can use the keywords in Table 13.86 only when producing ODS Graphics output. Greek letters are used in the labels for the statistics requested with the UMU and USIGMA keywords.

Table 13.86 Keywords Specific to ODS Graphics Output
Keyword	Description
TESTLEGEND	requests a legend of positive tests for special causes
UMU	estimated or specified process mean
USIGMA	estimated or specified process standard deviation

Top of Page