Subaru Costs Data Collected from Internet Ads for 1999 Subarus $r^{2}=0.47 \text { and equation }$

question 74

Essay

Subaru costs Data collected from internet ads for 1999 Subarus were used to create a
model to estimate the asking price of the car based on the number of miles it had been
driven. The model has $r^{2}=0.47 \text { and equation }$ = 15,327 - 0.11 Miles
) . The plot of
residuals versus the predicted price is shown.
a. Do you think you could make accurate estimates of Subaru prices with this model?
Explain.
b. Interpret the slope of the line.
c. One of the cars in the data set had been driven 42,000 miles. How much was the owner
asking for it? (Show work.)

---

Definitions:

Earthworms

Earthworms are soil-dwelling invertebrates that play a crucial role in enhancing soil fertility and promoting decomposition and nutrient cycling.

Usable Energy

Energy in forms that can be directly used by humans or converted to other forms of energy for work, including mechanical, electrical, and chemical energies.

Biomass

The total mass of all living organisms in a specific area or volume; often used as a renewable energy source derived from plant and animal material.

Trophic Level

The position an organism occupies in a food chain, defined by the number of steps it is from the primary source of energy (usually the sun); it indicates the organism's role in the transfer of energy and nutrients through an ecosystem.