The estimated regression equation for these data is ŷ = 70 − 3x.

Consider the data.

x_i	3	12	6	20	14
y_i	55	35	60	10	25

The estimated regression equation for these data is

ŷ = 70 − 3x.

(a)

Compute SSE, SST, and SSR using equations

SSE = Σ(y_i − ŷ_i)²,

SST = Σ(y_i − y)²,

and

SSR = Σ(ŷ_i − y)².

SSE=

SST=

SSR=

(b)

Compute the coefficient of determination r². (Round your answer to three decimal places.)

r² =

(c)

Compute the sample correlation coefficient. (Round your answer to three decimal places.)

Solutions

Expert Solution

orchestra answered 1 year ago

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