%{ 
ANSCOMBE: MATLAB script M-file that defines data
considered by F. J. Anscombe in "Graphs in Statistical 
Analysis, The American Statistician 27 (1973 17-21)
%}
%Set 1
x1=4:14;
y1=[4.26 5.68 7.24 4.82 6.95 8.81 8.04 8.33 10.84 7.58 9.96];
%Set 2
x2=4:14;
y2=[3.10 4.74 6.13 7.26 8.14 8.77 9.14 9.26 9.13 8.74 8.10];
%Set 3
x3=4:14;
y3=[5.39 5.73 6.08 6.42 6.77 7.11 7.46 7.81 8.15 12.74 8.84];
%Set 4
x4=[8*ones([1 10]) 19]
y4=[6.58 5.76 7.71 8.84 8.47 7.04 5.25 5.56 7.91 6.89 12.50];