可能是数据格式不对，比如时间或者有空格等，并不是所见即所得。

Please post the whole relevant log file.

NOTE: Copyright (c) 2002-2003 by SAS Institute Inc., Cary, NC, USA.
NOTE: SAS (r) 9.1 (TS1M3)
      Licensed to Demo SID, Site 0047162208.
NOTE: This session is executing on the XP_PRO  platform.



NOTE: SAS initialization used:
      real time           2.18 seconds
      cpu time            1.34 seconds

1    data reg;
2    input n x1-x3 y@@;
3    cards;

NOTE: SAS went to a new line when INPUT statement reached past the end of a line.
NOTE: The data set WORK.REG has 6 observations and 5 variables.
NOTE: DATA statement used (Total process time):
      real time           0.04 seconds
      cpu time            0.04 seconds


10   ;
11   run;


NOTE: Starting the Analyst Application.
12   ods preferences;
13   ods listing;
14   title1;
15   options ps=60;
16   proc printto new print=_proj_.PROJ3.RSLT0079.OUTPUT label="Analysis";
17   run;

NOTE: PROCEDURE PRINTTO used (Total process time):
      real time           0.06 seconds
      cpu time            0.01 seconds


18         title;
19         footnote;
20   *** Linear Regression ***;
21   options pageno=1;
22   proc reg data=Work.Reg;
23      model Y = X1 X2 X3;
24   run;

ERROR: 
25   quit;

NOTE: PROCEDURE REG used (Total process time):
      real time           0.01 seconds
      cpu time            0.01 seconds


26   proc printto; run;

NOTE: PROCEDURE PRINTTO used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds


27   options ps=55;
28   quit;

错误出现在  25行

已经发上去了  帮我看下吧  谢谢