ti2 = (-5)2 + (-4) 2 + (-3) 2 + (-2) 2 + (-1) 2 + 02 + 12 + 22 + 32 + 42 + 52 = 110
yi = 32.2 + 32.6 + 32.8 + 33.2 + 33.6 + 34 + 34.4 + 35 + 35.4 + 35.8 + 36.2 = 375.2
tiyi =
= (-5)*32.2 + (-4)*32.6 + (-3)*32.8 + (-2)*33.2 + (-1)*33.6 +
+0*34 + 1*34.4 + 2*35 + 3*35.4 + 4*35.8 + 5*36.2 = -161 -130.4 - 98.4 - 66.4 -
33.6 + 0 + 34.4 + 70 + 106.2 + 143.2 + 181 = 45…
