Problem 1 Select those attributes that can be inferred from the following residu

Question

Problem 1 Select those attributes that can be inferred from the following residual plot (select all that apply).

r: -0.83 x = -6.50 y = -463.27

I know that the combination of atributes of B,C,D,F,G is incorrect. Please tell me which combination of attributes do apply (and why).

I know that the combination of atributes of B,C,D,F,G is incorrect. Please tell me which combination of attributes do apply (and why).

Problem 1 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). (Q1) G: regression went wrong Problem 1: interpret this residual plot 300 200 100 100 200 500 600 700 800 10 10 r:-0.83

Explanation / Answer

A : if the residuals had zero mean the values would have been around the line y=0 , more or less a random pattern.

B: residuals following a decreasing trend.

C : since the pattern is not random we can assume there lies a nonlinear relationship

F: here the linear regression is a poor summary data as it does reflect the proper relationship better the data as pointed in C

G: the regression is not correct due to the above reasons.

Note : we cannot say for sure the data is heteroscedastic because in case of heteroscedasticity the residual plot usually gives a roughly cone( 2d) shaped curve.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.