Choosing the Best Model — Quiz

Question 1

Based on the residual plot shown, is a linear model appropriate for comparing tree age to basal area?

Revolt · Accepted Answer

Because the residual plot does not show a clear pattern, a linear model is appropriate.

Question 2

Based on the graphs, which type of model is likely appropriate for predicting weight from height?

Revolt · Accepted Answer

A power model could be appropriate because the scatterplot of log height versus log weight is roughly linear. The next step is to look at the residual plot.

Question 3

Based on the scatterplot and residual plot, what type of model is appropriate for comparing time and subscribers?

Revolt · Accepted Answer

An exponential model is appropriate because the relationship between period and the log of subscribers is roughly linear and the residual plot shows no distinct pattern.

Question 4

Based on the scatterplot and residual plot, which type of model would best summarize the relationship between launch angle and punt height?

Revolt · Accepted Answer

A power model is appropriate because the scatterplot of log angle and log height is roughly linear.

Question 5

Based on the least-squares regression and residual plot, is a linear model suitable for this data set?

Revolt · Accepted Answer

A linear model is not suitable because the residual plot shows a clear pattern.

Question 6

Based on the residual plot shown, is a linear model appropriate for comparing driving speed and fuel efficiency?

Revolt · Accepted Answer

A linear model is not appropriate because the residual plot shows a clear pattern.

Question 7

Based on the residual plot, is a linear model appropriate for summarizing this relationship?

Revolt · Accepted Answer

A linear model is not appropriate because the residual plot shows a clear pattern.

Question 8

Based on the residual plot, is a linear model suitable for modeling the population growth of Houston?

Revolt · Accepted Answer

A linear model is not suitable because the residual plot shows a curved pattern.

Question 9

Based on the scatterplot and residual plot shown, is a linear model appropriate for summarizing the relationship?

Revolt · Accepted Answer

A linear model is appropriate because the residual plot shows no pattern.

Question 10

Based on the residual plot, is a linear model appropriate for describing the relationship between brain mass and body mass?

Revolt · Accepted Answer

A linear model is not appropriate, because there is a clear pattern shown in the residual plot.

Choosing the Best Model — Quiz Answers

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