The rule of reason refers to the interpretation of the courts that dominant firms should be broken up because of their:

To graph a relationship involving more than two variables, we use which assumption?

A) linear assumption B) positive relationship assumption C) marginal analysis D) ceteris paribus E) trend assumption

Suppose there are four firms in an industry. The market shares of the four firms are 5 percent, 20 percent, 35 percent, and 40 percent. The Herfindahl-Hirschman index for that industry is

A) 6,650. B) 3,250. C) 1,250. D) 100.