联立方程模型 1:ROAi,t=β0+β1RDSi,t- 1+β2RDSi,t- 2+θnΣControlsi,t+εi,t RDSi,t=α0+α1ROAi,t- 1+α2ROAi,t- 2+θnΣControlsi,t+μi,t 联立方程模型 2:TobinQi,t=β0+β1RDSi,t- 1+β2RDSi,t- 2+θnΣControlsi,t+εi,t RDSi,t=α0+α1Tobi
BUG142520
2023-05-03
ROAi,t=β0+β1RDSi,t- 1+β2RDSi,t- 2+θnΣControlsi,t+εi,t RDSi,t=α0+α1ROAi,t- 1+α2ROAi,t- 2+θnΣControlsi,t+μi,t TobinQi,t=β0+β1RDSi,t- 1+β2RDSi,t- 2+θnΣControlsi,t+εi,t RDSi,t=α0+α1TobinQi,t- 1+α
BUG142520
2023-05-03