To evaluate whether the assumption of linearity has been violated, which of the following graph should be examined? A.QQ plot of residuals B.Predicted Values vs. Residuals C.Residuals vs. Progrm Per-Year Tuition ($) D.Residual index plotb) To evaluate whether the assumption of normality has been violated, which of the following graph should be examined? A.Predicted Values vs. Residuals B.Residuals vs. Progrm Per-Year Tuition ($) C.Residual index plot D.QQ plot of residualsc) To evaluate whether the assumption of equal variance has been violated, which of the following graph should be examined? A.Predicted Values vs. Residuals B.Residual index plot C.Residuals vs. Progrm Per-Year Tuition ($) D.QQ plot of residualsd) To evaluate whether the assumption of independence has been violated, which of the folowing graph should be examined? A.Residual index plot B.QQ plot of residuals C.Predicted Values vs. Residuals D.Residuals vs. Progrm Per-Year Tuition ($)e) Which of the assumptions of regression, if any, have been seriously violated? Select all that apply. A.The assumption of normality has been violated because the normal probability plot does not appear to be a straight line. B.The assumption of independence has been violated because errors from later time periods appear to be related to those from earlier time periods. C.The assumption of linearity has been violated because the data are clearly curvilinear. D.The assumption of equal variance has been violated because the variability of the residuals changes as the program per-year tuition increases. E.The assumptions of linearity, independence, normality, and equal variance do not appear to have been seriously violated.

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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To evaluate whether the assumption of linearity has been violated, which of the following graph should be examined?

QQ plot of residuals

Predicted Values vs. Residuals

Residuals vs. Progrm Per-Year Tuition ($)

Residual index plot

b) To evaluate whether the assumption of normality has been violated, which of the following graph should be examined?

Predicted Values vs. Residuals

Residuals vs. Progrm Per-Year Tuition ($)

Residual index plot

QQ plot of residuals

c) To evaluate whether the assumption of equal variance has been violated, which of the following graph should be examined?

Predicted Values vs. Residuals

Residual index plot

Residuals vs. Progrm Per-Year Tuition ($)

QQ plot of residuals

d) To evaluate whether the assumption of independence has been violated, which of the folowing graph should be examined?

Residual index plot

QQ plot of residuals

Predicted Values vs. Residuals

Residuals vs. Progrm Per-Year Tuition ($)

e) Which of the assumptions of regression, if any, have been seriously violated? Select all that apply.

The assumption of normality has been violated because the normal probability plot does not appear to be a straight line.

The assumption of independence has been violated because errors from later time periods appear to be related to those from earlier time periods.

The assumption of linearity has been violated because the data are clearly curvilinear.

The assumption of equal variance has been violated because the variability of the residuals changes as the program per-year tuition increases.

The assumptions of linearity, independence, normality, and equal variance do not appear to have been seriously violated.

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To evaluate whether the assumption of linearity has been​ violated, which of the following graph should be​ examined? A. QQ plot of residuals

To evaluate whether the assumption of linearity has been violated, which of the following graph should be examined? A. QQ plot of residuals