Question

Figure shows three residual plots and a normal probability plot of residuals. For each part, decide whether the graph suggests violation of one or more of the assumptions for regression inferences. Explain your answers.

х
х
(a)
(b)
"30-20-10 o 10 20 30
х
Residual
(c)
(d)
Residual
Residual
Normal score
Residual
m210구2까
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Transcribed Image Text

х х (a) (b) "30-20-10 o 10 20 30 х Residual (c) (d) Residual Residual Normal score Residual m210구2까