A group of scientists is studying the relationship between the weight of a vehicle, in tons, and its energy efficiency levels, in kilometers per gigajoule (km/GJ). The scientist studied several vehicles of different weights for a year. The results are shown on the scatter plot below with the line of best fit, which can be described by the model y=−20.3x+326.

The residuals based on the scatter plot are shown in the table below.

Select the statement that best describes the direction of the correlation of the line of best fit as it relates to the weight of the vehicle and its energy efficiency levels.
A: strong positive linear relationship
B: strong negative linear relationship
C: weak positive linear relationship
D: weak negative linear relationship

Question

07-11-2022
Mathematics

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A group of scientists is studying the relationship between the weight of a vehicle, in tons, and its energy efficiency levels, in kilometers per gigajoule (km/GJ). The scientist studied several vehicles of different weights for a year. The results are shown on the scatter plot below with the line of best fit, which can be described by the model y=−20.3x+326.

The residuals based on the scatter plot are shown in the table below.

Select the statement that best describes the direction of the correlation of the line of best fit as it relates to the weight of the vehicle and its energy efficiency levels.
A: strong positive linear relationship
B: strong negative linear relationship
C: weak positive linear relationship
D: weak negative linear relationship

Sagot :

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