Question: Snow goose feeding trial. Writing in the Journal of Applied Ecology (Vol. 32, 1995), botanists used multiple regression to model the weight change (y) of a baby snow goose subjected to a feeding trial. Three independent variables measured are listed below. Classify each as quantitative or qualitative.
(a) Diet type (plant or duck chow)
(b) Digestion efficiency (percentage)
(c) Amount of acid-fiber detergent added to diet (percentage)