Trends for many units

I have data on every grade in all elementary schools in Chicago over 5 years. I
would like to estimate a trend over time for each grade in each school. There
are 17,600 data all together (about 460 schools, nearly 8 grades each, over 5
years). Is there a not-so-hard way to do this in R (I was thinking of using
rlm)?
______________________________________________________________________
Stuart Luppescu         -=-=-  University of Chicago
$(B:MJ8$HCRF`H~$NIc(B        -=-=-  s-luppescu at uchicago.edu
http://www.consortium-chicago.org/people/sl.html
Finger sl70 at musuko.uchicago.edu forPGP Public Key
ICQ #21172047  AIM: psycho7070
You can't run away forever,
But there's nothing wrong with getting a good head start.
                -- Jim Steinman, "Rock and Roll Dreams Come Through"

Sent on 05-Jan-2001 at 15:16:09 with xfmail

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