answers
(Σx)*(Σx) = 11,664
(Σx)*(Σy) = 106 * 64.2 = 6805.2.
steps
add up all the numbers & multiply
bivariate data means data that often go together like
x is height & y is weight
(Σx)*(Σx)
Σx = 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16
= 108
(Σx)*(Σx) = Σx^2 = 108 * 108
= 11,664
Σx = 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16
= 108
Σy = 10.8 + 9.1 + 8.4 + 7.7 + 6.2 + 5.1 + 4.8 + 3 + 2.9
= 57.2
(Σx)*(Σy) = 108 * 57.2
= 6,177.6
open bard bing AI