TIME IS TICKING!!! Remaining Time: 2 hours, 16 minutes, 35 seconds s Question Co

Question

TIME IS TICKING!!! Remaining Time: 2 hours, 16 minutes, 35 seconds s Question Completion Status: QUESTION 7 For Questions 7-8 consider the following plot: Residuals vs. 9 130 Auls Title Does thie esidual plet show that any of the regession assumptions are viciatedn O No QUESTION 8 If any of the regesion assumptions are viclatad, which ane? O No assumptions are violatod O The assumption that values of c are independent O The asoumption that the values of e aro nomaly distributesd O The assumpoion that e hes constant variance QUESTION For Questions 9-11 consider the following plot Standardized Residuals vs. 9

Explanation / Answer

Question 7:

Yes the condition of constant variance of errors is violated here as clearly the errors variance are increasing with increasing values of x.

Question 8:

d) is the correct answer here because as explained above the assumption of constant variance with x is clearly violated here as the variance is increasing with x.

Question 9-11

Figure is not visible

Question 17:

Clearly as the p-value for x5 is very high, we should drop the x5 variable and rerun the regression. Therefore b) is the correct answer here.

Question 18:

High correlations between the independent variables is called the problem of multicollinearity therefore d) is the correct answer here.

Question 19:

a) is the correct answer here. because we can only remove an outlier when it way off from rest of the dataset and therefore there is a legitimate reason to remove it.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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