Problem 8.13.6
Group Sample Size x_1 x_2 x_3 \\
anxiety 114 2.9298 1.667 0.7281 \\
hysteria 33 3.0303 1.2424 0.5455 \\
psychopathy 32 3.8125 1.8438 0.8125 \\
obsession 17 4.7059 1.5882 1.1176 \\
personality change 5 1.4000 0.2000 0.0000 \\
normal 55 0.6000 0.1455 0.2182 \\