Tell what each of the residual plots to the right indicates about the appropriat

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Tell what each of the residual plots to the right indicates about the appropriateness of the linear model that was fit to the data.

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Secure https://www.mathxl.com/Student/PlayerTest.aspx?testld-181883523¢ Summer 2018 STA2023 CRN 32041 Online Profes (1) Emmanuherolange Augustin 6/17/18 5:26 PM Quiz: Quiz:Module 3 Submit Quiz This Question: 1 pt 8 of 10 (4 complete) ? This Quiz: 10 pts possible Tell what each of the residual plots to the right indicates about the appropriateness of the linear model that was fit to the data. (a) Choose the best answer for residuals plot (a) O A. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power increases as the values of the explanatory variable increases B. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases. ° C. The scattered residuals plot indicates an appropriate linear model. (b) Choose the best answer for residuals plot (b) ( A. The residual plot indicates that most of the data fall roughly along a straight line, with the exception of a single point B. The curved pattern in the residuals plot indicates that the linear model is not appropriate. The relationship is not linear ° C. The scattered residuals plot indicates an appropriate linear model. (c) Choose the best answer for residuals plot (c) O A. The residual plot indicates that most of the data fall roughly along a straight line, with the exception of a single point. B. The scattered residuals plot indicates an appropriate linear model. OC. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases Click to select your answer

Explanation / Answer

a)

Answer : A is correct

For an linear model the residuals in scatter plot should be spread in stochastic manner so that it can not be predicticted in plot (a) the pattern is more predicted as the value of independent variable increase. Hence linear model is not appropriate here

b)

Answer : C is correct

For a linear model the residual should be well spread along a straight line in unpredictive manner

c)

Answer : A is correct

The residuals are well spread along the straight line except there is one residual value whic lie far from the residuals

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