* test of xyplo regression * from Multivariate Data Analysis * by Coley and Lohnes, page 86. * These data should have an r of 0.788, Y = 1.108 X + 1.715 -3.0 1.8 -3.0 1.5 -3.0 1.2 -2.8 0.8 -2.6 1.2 -2.6 0.4 -2.5 0.6 -2.4 1.0 -2.4 0.2 -2.4 0.0 -2.2 0.8 -2.2 0.4 -2.0 0.0 -1.8 0.4 -1.8 0.2 -1.8 -0.6 -1.6 0.0 -1.4 0.2 -1.4 -0.2 -1.4 -0.6 -1.2 -0.8 -1.0 0.2 -1.0 0.0 -1.0 0.5 -1.0 0.6 -0.8 -0.6 -0.8 -1.0 -0.6 0.2 -0.6 0.0 -0.6 -0.6 -0.5 -0.4 -0.4 0.4 -0.4 -0.6 -0.2 0.6 -0.2 0.2 -0.2 -0.4 0.0 0.0 0.2 1.2 0.2 0.6 0.2 -0.4 0.4 1.4 0.4 1.0 0.4 0.8 0.4 0.2 0.4 -0.2 0.5 0.6 0.6 2.2 0.8 1.8 0.8 0.6 0.8 0.2 1.0 1.5 1.0 0.8 1.0 2.0 1.0 2.8 1.2 2.4 1.2 1.2 1.4 4.0 1.4 3.6 1.4 3.2 1.4 1.8 1.4 0.8 1.5 2.6 1.6 4.6 1.6 3.6 1.6 1.6 1.6 1.2 1.8 4.2 1.8 2.4 1.8 2.0 2.0 5.4 2.0 5.0 2.0 4.6 2.0 2.8 2.0 1.8 2.0 4.0 2.2 6.2 2.2 3.8 2.2 3.2 2.2 2.2 2.4 4.6 2.5 5.6 2.6 7.4 2.6 7.0 2.6 6.6 2.6 5.0 2.6 4.0 2.6 4.0 2.8 7.6 2.8 7.4 2.8 7.2 2.8 6.2 2.8 5.8 2.8 5.4 2.8 4.8 3.0 8.0 3.0 7.8 3.0 7.5 3.0 7.0 3.0 6.6 3.0 6.2