MEANS Procedure
- Syntax
- Overview
- Concepts
- Using
- Results
- Examples Computing Specific Descriptive StatisticsComputing Descriptive Statistics with Class VariablesUsing the BY Statement with Class VariablesUsing a CLASSDATA= Data Set with Class VariablesUsing Multilabel Value Formats with Class VariablesUsing Preloaded Formats with Class VariablesComputing a Confidence Limit for the MeanComputing Output StatisticsComputing Different Output Statistics for Several VariablesComputing Output Statistics with Missing Class Variable ValuesIdentifying an Extreme Value with the Output StatisticsIdentifying the Top Three Extreme Values with the Output StatisticsUsing the STACKODSOUTPUT option to control data
- References
BY Statement
Produces separate statistics for each BY group.
| See: | BY |
| Example: | Using the BY Statement with Class Variables |
Syntax
Required Argument
- variable
-
specifies the variable that the procedure uses to form BY groups. You can specify more than one variable. If you omit the NOTSORTED option in the BY statement, then the observations in the data set either must be sorted by all the variables that you specify or must be indexed appropriately. Variables in a BY statement are called BY variables.
Optional Arguments
- DESCENDING
-
specifies that the observations are sorted in descending order by the variable that immediately follows the word DESCENDING in the BY statement.
- NOTSORTED
-
specifies that observations are not necessarily sorted in alphabetic or numeric order. The observations are sorted in another way (for example, chronological order).The requirement for ordering or indexing observations according to the values of BY variables is suspended for BY-group processing when you use the NOTSORTED option. The procedure does not use an index if you specify NOTSORTED. The procedure defines a BY group as a set of contiguous observations that have the same values for all BY variables. If observations with the same values for the BY variables are not contiguous, then the procedure treats each contiguous set as a separate BY group.
Details
Using the BY Statement with the SAS System Option NOBYLINE
If you use the BY
statement with the SAS system option NOBYLINE, which suppresses the
BY line that normally appears in output that is produced with BY-group
processing, then PROC MEANS always starts a new page for each BY group.
This behavior ensures that if you create customized BY lines by putting
BY-group information in the title and suppressing the default BY lines
with NOBYLINE, then the information in the titles matches the report
on the pages.
See Creating Titles That Contain BY-Group Information . Also
see Suppressing the Default BY Line.