```Date: Fri, 5 Nov 2010 17:11:32 -0400 Reply-To: Nat Wooding Sender: "SAS(r) Discussion" From: Nat Wooding Subject: Re: using data from two data sets In-Reply-To: <001601cb7d29\$4810e8f0\$d832bad0\$@com> Content-Type: text/plain; charset="US-ASCII" Well, if memory serves, you are calculating the corrected sums of squares so why not let Proc Means do it all at once: Data start; input x ; z= (x - 2.5)**2; y + z; cards; 1 2 3 4 ; Proc Means data = start; output out = end css=css ; var x; run; I threw in the y and z variables so that I could check the result. Nat Wooding -----Original Message----- From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of bbser2009 Sent: Friday, November 05, 2010 4:38 PM To: SAS-L@LISTSERV.UGA.EDU Subject: using data from two data sets For illustration, consider two data sets, temp1 x 1 2 3 4 temp2 (the mean of x in temp1) mean 2.5 Now I would like to sum all the squares like this: (1-2.5)**2+(2-2.5)**2+... Apparently we need data from the two different data sets, but I do not want to combine the two into one. I just need to do this in one data step, where I can read from the data sets and do the computation. Could you help me with this? Thanks. Regards, Max ```

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