I need the complete working solutions and accurate answers to this question. Tha

Question

I need the complete working solutions and accurate answers to this question. Thank you.

(3 pts.) 4. For each of the following residual plots, indicate whether the graph: 1) violates the linearity assumption, 2) violates the constant variance assumption, or 3) has no violations Note that a particular graph may violate more than one assumption 0 2 2 (1 pt.) a) (1 pt.) b) 35 8 3e 6 O 25 4 e 2 29 28 4e 60 80 100 129 148 168 180 15 2 25 54455e Predicted Predicted (1 pt.) c) 1.0- O0.5 15 2e 25 35 4 45 Predicted Additional Problems: 12.97 2 Practice Problems: 12.67 (p. 611)

Explanation / Answer

In plot(a), as the residual values keep on increasing, as the

predicted values increase.So it violates the constant variance

assumption.

In plot(b), the residual plot exhibits a pattern like parabola,

so some higher order terms is required in order to explain the

variation. Hence, the residual plot violates the linearity

assumption.

Plot(c) is completely random, it is distributed randomly, so

linearity assumption is satisfied. Also, it is distributed

uniformly above and below the x-axis. So, the constant

variance assumption is also satisfied. Hence, there is no

violation in this plot.

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