The OUTLIMITS= data set saves decision limits and decision limit parameters. The following variables can be saved:
Table 4.17: OUTLIMITS= Data Set
Variable |
Description |
---|---|
|
significance level () |
|
group-variable specified in the UCHART statement |
|
optional identifier for the decision limits specified with the OUTINDEX= option |
|
lower decision limit for occurrence rates |
|
number of groups |
|
number of opportunity units associated with the decision limits |
|
type (estimate or standard value) of |
|
value of central line of u chart () |
|
upper decision limit for occurrence rates |
|
response specified in the UCHART statement |
Notes:
If the decision limits vary with the number of opportunity units, the special missing value V is assigned to the variables _LDLU_
, _UDLU_
, and _LIMITN_
.
Optional BY variables are saved in the OUTLIMITS= data set.
The OUTLIMITS= data set contains one observation for each response specified in the UCHART statement. For an example, see Saving Decision Limits.
The OUTSUMMARY= data set saves group summary statistics. The following variables are saved:
the group-variable
a response rate variable, whose name is response suffixed with U
a number of opportunity units variable, whose name is response suffixed with N
Given a response name that contains 32 characters, the procedure first shortens the name to its first 16 characters and its last 15 characters, and then it adds the suffix.
Group summary variables are created for each response specified in the UCHART statement. For example, consider the following statements:
proc anom data=Fabric; uchart (Flaws Ndefects)*Treatment / outsummary=Summary groupn = 30; run;
The data set summary contains the variables Treatment
, FlawsU
, FlawsN
, NdefectsU
, and NdefectsN
.
Additionally, the following variables, if specified, are included:
BY variables
block-variables
symbol-variable
ID variables
_PHASE_
(if the OUTPHASE= option is specified)
The OUTTABLE= data set saves group summary statistics, decision limits, and related information. The following variables are saved:
Variable |
Description |
---|---|
|
significance level () |
|
decision limit exceeded on u chart |
group |
values of the group variable |
|
lower decision limit for group rate |
|
nominal number of opportunity units associated with the decision limits |
|
group rate |
|
number of opportunity units in group |
|
upper decision limit for group rate |
|
response specified in the UCHART statement |
In addition, the following variables, if specified, are included:
BY variables
block-variables
symbol-variable
ID variables
_PHASE_
(if the READPHASES= option is specified)
Note: The variable _EXLIM_
is a character variable of length 8. The variable _PHASE_
is a character variable of length 48. The variable _VAR_
is a character variable whose length is no greater than 32. All other variables are numeric.