Short Answer Question We have a dataset with n= 10 pairs of observations (li, Yi), and...

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Short Answer Question We have a dataset with n= 10 pairs of observations (li, Yi), and n Σ X; = 683, Yi = 813, i=1 i=1 n n {

math Statistics-And-Probability

Answer 1

Answer #1

Equation of regression line is Ŷ = a + bX

b = (nΣΧΥ – ΣΧΣΥ)/(ηΣΧ? - (ΣΧ)2)
$b = ( 10 * 56089 - 683 * 813 ) / ( 10 * 47405 - ( 683 )^{2})$
b = 0.742

a =( Σ Y - ( b * Σ X) ) / n
a =( 813 - ( 0.7421 * 683 ) ) / 10
a = 30.615

Equation of regression line becomes Ŷ = 30.615 + 0.742 X

Answer 2

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