Truck Speed vs Gas Mileage: An economist wanted to analyze the relationship between the speed of a car (x) and its gas mileage (y). As an experiment a car is operated at several different speeds and for each speed the gas mileage is measured. These data are shown below.

-The following 10 observations of variables x and y were collected.
Find the least squares regression line, and the estimated value of y when x = 3.

Question

Truck Speed vs Gas Mileage: An economist wanted to analyze the relationship between the speed of a car (x) and its gas mileage (y). As an experiment a car is operated at several different speeds and for each speed the gas mileage is measured. These data are shown below.
 
-The following 10 observations of variables x and y were collected.
  Find the least squares regression line, and the estimated value of y when x = 3.

Quizplus · Accepted Answer

The Answer of Truck Speed vs Gas Mileage: An economist wanted to analyze the relationship between the speed of a car (x) and its gas mileage (y). As an experiment a car is operated at several different speeds and for each speed the gas mileage is measured. These data are shown below.
 
-The following 10 observations of variables x and y were collected.
  Find the least squares regression line, and the estimated value of y when x = 3.

Truck Speed Vs Gas Mileage: an Economist Wanted to Analyze