Thank you very much! I have SAS 9.0. May be thats the reason. However, I did it with the use of some papers I found online. data sim; sig=1;     do i=1 to 2000;     z=rannor(12346);     y=sig*z;     sig2= 1+ 0.3*y*y+0.4*sig*sig;     sig=sqrt(sig2);     output ; end; LIBNAME dat "c:\sas\data\"; PROC EXPORT DATA=sim             OUTFILE="F:\data\sim.csv"             DBMS=csv REPLACE; RUN; I appreciate every answer!!!! ... View more

Thanks. But it gives the following errors:   libname ttt "F:\temp\create an excel file.xls"; ERROR: Connect: 'F:\temp\create an excel file.xls' is not a valid path.  Make        sure that the path name is spelled correctly and that you are        connected to the server on which the file resides. ERROR: Error in the LIBNAME statement. 1549 1550  proc sql; 1551  drop table ttt.sim; ERROR: Libname TTT is not assigned. WARNING: Table TTT.sim has not been dropped. 1552  quit; NOTE: The SAS System stopped processing this step because of errors. NOTE: PROCEDURE SQL used (Total process time):       real time           0.00 seconds       cpu time            0.00 seconds 1553 1554  data ttt.sim; 1555 1556 1557 1558  sig=1; 1559 1560 1561 1562      do i=1 to 2000; 1563 1564      z=rannor(12346); 1565 1566      y=sig*z; 1567 1568      sig2= 1+ 0.3*y*y+0.4*sig*sig; 1569 1570      sig=sqrt(sig2); 1571 1572  OUTPUT; 1573 1574      end; 1575 1576  run; ERROR: Libname TTT is not assigned. NOTE: The SAS System stopped processing this step because of errors. NOTE: DATA statement used (Total process time):       real time           0.03 seconds       cpu time            0.01 seconds 1577 1578  libname ttt clear; WARNING: Libname TTT is not assigned. ... View more

I there a way to write there data to an excel file? ... View more

Thank you very much!!! It worked. ... View more

Thank you very much! ... View more