*(Q) How can I split a file into 10 random pieces of equal size. *(A) Posted to SPSSX-L list by Raynald Levesque on 2002/07/30. * www.spssstools.net *. GET FILE='C:\\Program Files\\SPSS2\\Employee data.sav'. COMPUTE draw=UNIFORM(1). COMPUTE nobreak=1. RANK VARIABLES=draw (A) BY nobreak /NTILES (10). * Check that it works. FREQ VAR=ndraw. (Of course if the number of cases is not a multiple of 10, some groups will have 1 more cases than others).