Researchers are interested in the relationship between energy intake and output of highly trained athletes. In a recent study, 25 elite dancers between the ages of 18 and 28 provided information as body measurements, food intake, and energy expenditure.

Fitted Line Plot % Body Fat = - 10.42 + 0.5290 Waist 36 S 2.63462 R-Sq 41.8% R-Sq(adj) 39.2% 34 32- 30 28 % Body Fat 26- 24 22- 20- 65 70 75 80 85 Waist