Question

ch 5 which of the following measures the direction and strength of the linear relationship between x and y?
interpolation
regression
correlation
extrapolation
question 13
1 pts
ch 5 given this regression line: y = -10 + 2.7x
where y = motor vehicle fatalities (per 100,000 residents); x = percent population for ages 18 - 24.
for every one unit increase in x, the model predicts _________ change in the predicted value of y.
-10 + 2.7x
2.7
-10
2.7 * (-10)

Explanation:

Step1: Analyze the regression line formula

The general form of a simple linear regression line is \(y = a+bx\), where \(a\) is the y - intercept and \(b\) is the slope. In the given regression line \(y=-10 + 2.7x\), \(b = 2.7\).

Step2: Interpret the slope

The slope \(b\) in a regression line represents the change in the predicted value of \(y\) for a one - unit increase in \(x\).

Answer:

2.7