A regression analysis between weight (y in pounds) and height (x in inches) resulted in the following least squares line: $\hat { y } = 120 + 5 x$ . This implies that if the height is increased by 1 inch, the weight, on average, is expected to:
A)increase by 1 pound.
B)decrease by 1 pound.
C)increase by 5 pounds.
D)increase by 24 pounds.

Question

Quizplus · Accepted Answer

The coefficient of x in the regression equation (5) indicates that for every 1-inch increase in height, the weight is expected to increase by 5 pounds.

A Regression Analysis Between Weight (Y in Pounds) and Height y^=120+5x\hat { y } = 120 + 5 xy^​=120+5x

A Regression Analysis Between Weight (Y in Pounds) and Height $\hat { y } = 120 + 5 x$