13,97
x y x2 y2 xy n = 7
15 11 225 121 165 Σx = 177
22 22 484 484 484 Σy = 144
42 30 1764 900 1260 Σx2 = 5285
30 26 900 676 780 Σy2 = 3224
18 17 324 289 306 Σxy = 4049
12 15 144 225 180
38 23 1444 529 874
SKxx = 809,429
SKyy = 261,714
SPxy = 407,857
b) b1 = 0,504
b0 = 7,830
d) r = 0,886
r2 = 0,785
e) y(35) = 25,466
f) s = 3,353
g) α = 0,020
t5;0.02 = 3,365
sb1 = 0,118
β1 ε 0,11 0,90
h) α = 0,020
t5;0.02 = 3,365
t = 4,276
α = 0,020
i) t5;0.01 = 3,365
t = 4,276