Analyzing Residuals

Question 1

Consider the table showing the given, predicted and residual values for a data set.

Revolt · Accepted Answer

(4, 0.1)

Question 2

Which residual plot shows that the line of best fit is a good model?

Revolt · Accepted Answer

A graph shows both axes unnumbered. Points are scattered all over the graph.

Question 3

The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph.

Revolt · Accepted Answer

–2

Question 4

Find the residual values, and use the graphing calculator tool to make a residual plot.

Revolt · Accepted Answer

No, the points are in a curved pattern.

Question 5

Kiley gathered the data in the table. She found the approximate line of best fit to be y = 1.6x – 4.

Revolt · Accepted Answer

–1.8

Question 6

Shanti wrote the predicted values for a data set using the line of best fit y = 2.55x – 3.15. She computed two of the residual values.

Revolt · Accepted Answer

a = –0.4 and b = 0.15

Question 7

Find the residual values, and use the graphing calculator tool to make a residual plot.

Revolt · Accepted Answer

Yes, because the points have no clear pattern.

Question 8

Points and their residual values are shown in the table.

Revolt · Accepted Answer

0.7

Question 9

Use the graphing calculator tool to plot the residual points.(1, 0.86), (2, –0.25), (3, –1.66), (4, –2.34), (5, –4.1)

Revolt · Accepted Answer

No, the points are in a linear pattern.

Question 10

Which table of values represents the residual plot?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/evresources/3109/3109-11/3109-11-03/3109-11-03-assessment/3109-11-03-15a.PNG

Analyzing Residuals Answers