i will analyze by DIFFERENCE-IN-DIFFERENCES (DiD) analysis. and I will use BALANCED DATA SET. understand me? id YEAR TIME IND TIME x IND id YEAR TIME IND TIME x IND a 2000 0 0.23 0 a 2000 0 0.23 0 a 2001 1 0.22 0.22 a 2001 1 0.22 0.22 b 2000 0 0.43 0 → c 2000 0 0.55 0 b 2001 1 . . c 2001 1 33 33 c 2000 0 0.55 0 d 2000 0 0.25 0 c 2001 1 33 33 d 2001 1 0.4 0.4 d 2000 0 0.25 0 d 2001 1 0.4 0.4
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