The Econometric SocietyEdited by: Guido W. Imbens • Print ISSN: 0012-9682 • Online ISSN: 1468-0262
Econometrica: Sep, 1974, Volume 42, Issue 5
https://doi.org/0012-9682(197409)42:5<947:MOCVIO>2.0.CO;2-Y
p. 947-966
Gyoichi Iwata
This paper proposes a method for measuring the numerical value of the conjectural variation which has been a key concept in oligopoly theories. The statistical property of the estimator for the conjectural variation is examined and two statistical tests are presented. One is a test for the hypothesis that the conjectural variation is a specified value. The other is designed for the hypothesis that there is a certain type of collusion among oligopoly firms. These are applied to the Japanese flat glass industry.
