Date:         Mon, 20 Jun 2005 08:44:10 -0700
Reply-To:     "James.Roy" <ljmpll@SOHU.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "James.Roy" <ljmpll@SOHU.COM>
Organization: http://groups.google.com
Subject:      a question about mean
Comments: To: sas-l@uga.edu
Content-Type: text/plain; charset=ISO-8859-1

I want to get a new table by merge two tables(the same structure), the
new table's variant value should be a mean value based on the two same
value.That is, I get  table 3 by table1 and 2, but what's the program
?
table1&#65306;

    a          b         c

1  0.5        0.1       0.1

2  0.2        0.5       0.1

3  0.1        0.2       0.3

table2:

    a           b         c

1  0.2        0.6       0.4

2  0.1        0.6       0.1

3  0.6        0.4       0.3

table3:

    a           b         c

1  0.35       0.35      0.25

2  0.15       0.55      0.10

3  0.35       0.30      0.30