1) What is the difference between a change in the quantity supplied and a change in supply? 2) What is the difference between a change in the quantity demanded and a change in demand? 3) When does a shortage occur? 3) When does a surplus occur? 4) Suppose Ramen noodles, an inexpensive but a quite tasty dish, are an inferior good. Why do grocery stores in college towns, that is, towns with a large fraction of college students, stock a lot of Ramen noodles