Question

The scatter plot represents the advertised horsepower rating and expected gas milage for several 2007 vehicles as reported by Kelly Blue Book. The r value for this datat is -0.8687. This tells us that the graph shows a: strong and negative linear association between horsepower and gas mileage. weak and negative linear association between horsepower and gas mileage. strong and positive linear association between horsepower and gas mileage. weak and positive linear association between horsepower and gas mileage.

Answer 1

a: strong and negative linear association between horsepower and gas mileage

Explanation:

The relationship between two variables is generally considered strong when their absolute value of r is larger than 0.7. Here the absolute value of r is 0.8687 > 0.7.

The relationship is negative because r is negative, that is, when one variable increases, the other one decreases.