Use the Following Information to Answer the Question

question 2

Multiple Choice

Use the following information to answer the question. Below is the scatterplot showing the association between miles driven in a semi truck (x) , and the amount of tread wear on the tires (y) . The residual plot of the data is also shown along with a QQ plot of the residuals.

-Choose the statement that best describes whether the condition for normality of errors does or does not hold for the linear regression model.

• A)The residual plot shows no trend, therefore the normality condition is satisfied.
• B)The QQ plot mostly follows a straight line, therefore the normality condition is satisfied.
• C)The residual plot does not display a fan shape, therefore the normality condition is satisfied.
• D)The residual mostly follows a horizontal line which would have a slope of zero, therefore the normality condition is not satisfied.

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Definitions:

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