SPSS® 12.0 Command Syntax Reference

AGGREGATE
AGGREGATE OUTFILE={file} [/MISSING=COLUMNWISE] [/DOCUMENT]
{* }
[/PRESORTED] /BREAK=varlist[({A})][varlist...]
{D}
/aggvar[’label’]aggvar[’label’]...=function(arguments)
[/aggvar ...]
Available functions:
SUM Sum MEAN Mean
SD Standard deviation MAX Maximum
MIN Minimum PGT % of cases greater than value
PLT % of cases less than value PIN % of cases between values
POUT % of cases not in range FGT Fraction greater than value
FLT Fraction less than value FIN Fraction between values
FOUT Fraction not in range N Weighted number of cases
NU Unweighted number of cases NMISS Weighted number of missing cases
NUMISS Unweighted number of missing cases FIRST First nonmissing value
LAST Last nonmissing value MEDIAN Median
Example
Overview
AGGREGATE OUTFILE=AGGEMP /BREAK=LOCATN DEPT /COUNT=N
/AVGSAL AVGRAISE = MEAN(SALARY RAISE)
/SUMSAL SUMRAISE = SUM(SALARY RAISE)
/BLACKPCT ’Percentage Black’ = PIN(RACE,1,1)
/WHITEPCT ’Percentage White’ = PIN(RACE,5,5).
AGGREGATE aggregates groups of cases in the working data file into single cases and
creates a new, aggregated file. The values of one or more variables in the working file define
the case groups. These variables are called break variables. A set of cases with identical
values for each break variable is called a break group. A series of aggregate functions are
applied to source variables in the working file to create new, aggregated variables that have
one value for each break group.
AGGREGATE is often used with MATCH FILES to add variables with summary measures
(sum, mean, etc.) to a file. Transformations performed on the combined file can create
composite summary measures. With the REPORT procedure, the composite variables can
be used to write reports with nested composite information.
90