A regression analysis between weight ( , in kg) and height ( , in cm) resulted in the following least-squares line: = -5 + 0.4 . This implies that if the height is increased by 1 cm, the weight is expected to increase by an average of 0.4 kg.

Question

A regression analysis between weight (  , in kg) and height (  , in cm) resulted in the following least-squares line:  = -5 + 0.4  . This implies that if the height is increased by 1 cm, the weight is expected to increase by an average of 0.4 kg.

Quizplus · Accepted Answer

This is the definition of the slope of the regression line, which in this case is 0.4. An increase of 1 cm in height corresponds to a expected increase of 0.4 kg in weight, according to the relationship described by the regression line.

A Regression Analysis Between Weight ( , in Kg)