please solve and explain this question Regression Diagnostics and Pitfalls Probl

Question

please solve and explain this question

Regression Diagnostics and Pitfalls Problem 2 A residuals have nonzero mean B residuals have trend C: data have nonlinear association D: data are heteroscedastic E: regression looks fine F: regression is a poor summary of the data Select those attributes that can be inferred from the following residual plot (select all that apply). (Q2) G regression went wrong Problem 2: interpret this residual plot 300 200 100. 100 -300 T00 10 10 r: -0.79 x = 3.42 y =-397.71

Explanation / Answer

It is clear that the regression doesn't look fine. It is not a linear relatiion, may need further working. See the tip of the relation x=0 onwards. Hence, E option is out of question.

Here' all that went wrong with this question:

A. Residual have nonzero mean

B. residuals have a trend

C. data have nonlinear associaltion

D. data are heteroscadastic

F: regression is a poor summary of the data

G: regression went wrong

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