Colleagues: Here are the 4 pairs of X,Y variables from Anscombe's 1973
American Statistician paper.
(The columns, in order, are X1, Y1, X2, Y2, etc. Calculate the means and
SDs for each variable, and r for each pair. This is a nice example to
emphasize the importance of plotting data before fitting a model.)
Cheers, Dale Berger
Psychology Department
Claremont Graduate University
123 East Eighth Street
Claremont, CA 91711
FAX: 909-621-8905
Phone: 909-621-8084
http://www.cgu.edu/faculty/bergerd.html
10.00 8.04 10.00 9.14 10.00 7.46 8.00 6.58
8.00 6.95 8.00 8.14 8.00 6.77 8.00 5.76
13.00 7.58 13.00 8.74 13.00 12.74 8.00 7.71
9.00 8.81 9.00 8.77 9.00 7.11 8.00 8.84
11.00 8.33 11.00 9.26 11.00 7.81 8.00 8.47
14.00 9.96 14.00 8.10 14.00 8.84 8.00 7.04
6.00 7.24 6.00 6.13 6.00 6.08 8.00 5.25
4.00 4.26 4.00 3.10 4.00 5.39 19.00 12.50
12.00 10.84 12.00 9.13 12.00 8.15 8.00 5.56
7.00 4.82 7.00 7.26 7.00 6.42 8.00 7.91
5.00 5.68 5.00 4.74 5.00 5.73 8.00 6.89
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, September 20, 2000 10:15 AM
Subject: datasets w/equal R^2???
> There is an introductory example of two datasets with equal R^2
> (and possibly with equal coefficients?) but with
> markedly different residuals. I can't for the life of me
> remember the author's name that is associated with these
> data, or where to find them.
>
> Any help would be appreciated.
>
> Bruce
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
>
>
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