xtreg risk1 ff size mtb topshare cs inst tang growthta gpm i.year,fe r
areg risk1 ff size mtb topshare cs inst tang growthta gpm i.year,absorb(code) cluster(code)
为什么这两个回归结果的R方相差和很大?求助
------------------------------------
(1) (2)
1 m2
------------------------------------
ff 0.0217*** 0.0217***
(0.0056) (0.0063)
size -0.2846* -0.2846
(0.1689) (0.1889)
mtb 0.0647*** 0.0647**
(0.0233) (0.0261)
topshare 0.0382*** 0.0382***
(0.0100) (0.0111)
cs 0.5705*** 0.5705***
(0.1444) (0.1614)
inst -0.0145*** -0.0145***
(0.0040) (0.0045)
tang -0.0189*** -0.0189**
(0.0066) (0.0074)
growthta -0.0040*** -0.0040***
(0.0012) (0.0013)
gpm 0.0217*** 0.0217***
(0.0069) (0.0077)
2014.year 0.0000 0.0000
(.) (.)
2015.year -0.5520*** -0.5520***
(0.0721) (0.0807)
2016.year -1.0750*** -1.0750***
(0.0942) (0.1053)
2017.year -1.0087*** -1.0087***
(0.1109) (0.1240)
2018.year -0.5979*** -0.5979***
(0.1368) (0.1529)
_cons 9.2188** 9.2188**
(3.8207) (4.2721)
------------------------------------
N 10805 10805
F 24.7939 19.8310
r2 0.0624 0.6486
r2_a 0.0613 0.5602
------------------------------------
Standard errors in parentheses
* p<0.10, ** p<0.05, *** p<0.01


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