Concentration ratios, 238–243 four-firm, 238–241 Herfindahl-Hirschman index, 239–241 limitations of,

Concentration ratios, 238–243
four-firm, 238–241
Herfindahl-Hirschman index,
239–241
limitations of, 241–243
of U.S. industry, 239–241
Conduct across industries, 246–251
advertising, 251
integration, 248–250
Lerner index, 247–248
merger activity, 248–250
pricing behavior, 247–248
research and development,
250–251
Confidence interval, 99–100
Conglomerate mergers, 250
Constant returns to scale, 185–186
Constraints, 122–127
budget, 123–125
identifying, 4–5