The OUTLIMITS= data set saves decision limits and decision limit parameters. The following variables can be saved:
Table 4.23: OUTLIMITS= Data Set
Variable 
Description 


significance level (). 

degrees of freedom for mean square error (). 

groupvariable specified in the XCHART statement 

optional identifier for the decision limits specified with the OUTINDEX= option 

lower decision limit for group means 

number of groups 

group sample size associated with the decision limits 

weighted average of group means () 

mean square error (). 

type (estimate or standard value) of 

upper decision limit for group means 

response specified in the XCHART statement 
Notes:
In the unbalanced case, the special missing value V is assigned to the variables _LIMITN_
, _LDLX_
, and _UDLX_
to indicate that the decision limits vary with the group sample size.
Optional BY variables are saved in the OUTLIMITS= data set.
The OUTLIMITS= data set contains one observation for each response specified in the XCHART statement. For an example, see the section Saving Decision Limits.
The OUTSUMMARY= data set saves group summary statistics. The following variables can be saved:
the groupvariable
a group mean variable named by response suffixed with X
a group sample size variable named by response suffixed with N
a group standard deviation variable named by response suffixed with S
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 XCHART statement. For example, consider the following statements:
proc anom data=Steel; xchart (Width Diameter)*Lot / outsummary=Summary; run;
The data set Summary contains variables named Lot
, WidthX
, WidthS
, WidthN
, DiameterX
, DiameterS
, and DiameterN
. Additionally, the following variables, if specified, are included:
BY variables
blockvariables
symbolvariable
ID variables
_PHASE_
(if the OUTPHASE= option is specified)
For an example of an OUTSUMMARY= data set, see the section Saving Summary Statistics for Groups.
The OUTTABLE= data set saves group summary statistics, decision limits, and related information. The following variables can be saved:
Variable 
Description 


significance level () 

decision limit exceeded (if any) 
group 
values of the group variable 

lower decision limit for group mean 

nominal sample size associated with the decision limits 

central line 

group sample size 

group mean 

upper decision limit for group mean 

response specified in the XCHART statement 
In addition, the following variables, if specified, are included:
BY variables
blockvariables
symbolvariable
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.
For an example, see the section Saving Decision Limits.