Calculating the Least-Squares Regression Line

Question 1

Which statement is a correct interpretation of the residuals?

Revolt · Accepted Answer

The residual for x = 45 is close to $0, which means that the predicted price almost the same as the actual price.

Question 2

Use the Desmos Interactive Linear Regression. Find the regression equation and correlation coefficient. Recall that the linear regression command in Desmos after entering the table of values is “y1 ~ bx1 + a”.

Revolt · Accepted Answer

ŷ ~ x +: 19.6784; r =: –0.9777

Question 3

ŷ ~ [___]x + [___]

Revolt · Accepted Answer

–0.741505; ŷ ~ x +: –0.741505; ŷ ~ x +: 19.6784; r =: –0.9777

Question 4

X –19.6784–0.7415050.741505✔ 19.6784

Revolt · Accepted Answer

✔ 19.6784

Question 5

✔ –0.9777X –0.9558 0.9558 0.9777

Revolt · Accepted Answer

✔ –0.9777

Calculating the Least-Squares Regression Line Answers

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