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Need answers don’t understand this-example-1
User Neysa
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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

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User Wjl
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