I am experimenting errors with AGGREGATE with version 0.10.1-g1082b8 of PSPP. 
Specifically, the computed values of the aggregated statistics are not valid. 
SPSS does correctly the computation, but not PSPP. Do someone knows why? Or is 
it a bug?

Here is our syntax.

* 
......................................................................................................................................
* Aggregate PVIREAD statistics by PROVINCE.
* PV1READ is a variable from the PISA 2009 data file for reading achievement.
* PROVINCE is a previously created variable for the Canadian sates.
 AGGREGATE
  /OUTFILE=* MODE=ADDVARIABLES
  /BREAK=PROVINCE
  /PV1READ_MEAN = MEAN(PV1READ)
  /PV1READ_SD       = SD(PV1READ)
  /PROVINCE_N       = NU(PV1READ).
* 
......................................................................................................................................

Best regards.
______________
Gilles Raîche
Faculté des sciences de l'éducation
Département d'éducation et pédagogie
Université du Québec à Montréal
C.P. 8888, succ. Centre-ville
Montréal, QC CANADA H3C 3P8

Pavillon Paul Gérin-Lajoie - local : N-6250
Téléphone : (514) 987-3000 poste 1712
Télécopie  : (514) 987-4608
http://www.Cdame.uqam.ca
Plan du campus: http://www.uqam.ca/campus/
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