1 Which of the following is NOT a method of assessing a regression model? A. Doi

Question

1 Which of the following is NOT a method of assessing a regression model?

A. Doing an F-test for the overall validity of the model B. Doing an F-test for the ratio of variances C. Observing the R-squared value D. Doing a t-test for slopes

2 The degrees of freedom for the F-test in overall model validity are k and n-k-1, with k being the number of independent variables in the model.

A: True B: False

3 The degrees of freedom for the t-test for slope is n-k.

A: True B: False

4 When the correlation coefficient is zero, then there is no relationship between the dependent variable and the independent variable

A:True B:False

2 The degrees of freedom for the F-test in overall model validity are k and n-k-1, with k being the number of independent variables in the model.

A: True B: False

3 The degrees of freedom for the t-test for slope is n-k.

A: True B: False

4 When the correlation coefficient is zero, then there is no relationship between the dependent variable and the independent variable

A:True B:False

Explanation / Answer

1. We can't use F-test for the ratio of variances to assess a regression model. Option B is correct.

2. True

3. False; Degrees of freedom for a t - test for slope is n - 2.

4. False; there would be no linear relationship but other form of relationships may exist.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

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