Assuming the data is best modeled by a linear function predict the number of gallons used if she drives at an average of 62 mph
A 39 gallons B 36 gallons C 51 gallons D 47 gallons
1 answer:
Linear regression
Let's graph the points of the given table, where the Speed will correspond to the x axis and the gallons to the y axis.
We have the following plot:
Let's draw a line that join the first point (20, 23) and the last point (50,35)
We have that this line is a good approximation to a linear regression of the data.
If we observe the point where x = 62 mph, we will se that y obtains a value of 40:
Then, we have that if she drives at 62 mph she will use approximately ≈40 gallons
The choice that bests fits 40 gallons is 39.
<h2>Answer: A. 39 gallons</h2>If we verify with a calculator, we will have that the linear regression is given by the green line
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Answer:
Option D