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We have a dataset with n = 10 pairs of observations (xi; yi), and
Xn
i=1
xi = 683;
Xn
i=1
yi = 813;
Xn
i=1
x2i
= 47; 405;
Xn
i=1
xiyi = 56; 089;
Xn
i=1
y2
i = 66; 731:
What is the line of best fit for this data?

We have a dataset with n = 10 pairs of observations (xi, Yi), and n n Xi = = 683, si = = 813, i=1 n n n 22; = 47, 405, Diyi =

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Answer #1

Solution:

Best Linear regression,

y^ = 30.615+ 0.7421*x

Σy- 6Σ X 813 - 0.7421*683 = 30.615 a = 10 7 10*56089-683*813 Ο» = ηΣ (xy) - (Σκ) (Σ») ηΣ - Σκ)? Ε 0.7421 10*47405 - 683*683

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