sorunun ne olduğu
library(wooldridge)
data("wage1")
head(wage1)## wage educ exper tenure nonwhite female married numdep smsa northcen south
## 1 3.10 11 2 0 0 1 0 2 1 0 0
## 2 3.24 12 22 2 0 1 1 3 1 0 0
## 3 3.00 11 2 0 0 0 0 2 0 0 0
## 4 6.00 8 44 28 0 0 1 0 1 0 0
## 5 5.30 12 7 2 0 0 1 1 0 0 0
## 6 8.75 16 9 8 0 0 1 0 1 0 0
## west construc ndurman trcommpu trade services profserv profocc clerocc
## 1 1 0 0 0 0 0 0 0 0
## 2 1 0 0 0 0 1 0 0 0
## 3 1 0 0 0 1 0 0 0 0
## 4 1 0 0 0 0 0 0 0 1
## 5 1 0 0 0 0 0 0 0 0
## 6 1 0 0 0 0 0 1 1 0
## servocc lwage expersq tenursq
## 1 0 1.131402 4 0
## 2 1 1.175573 484 4
## 3 0 1.098612 4 0
## 4 0 1.791759 1936 784
## 5 0 1.667707 49 4
## 6 0 2.169054 81 64tail(intdef)## year i3 inf rec out def i3_1 inf_1 def_1 ci3
## 51 1998 4.81 1.6 20.0 19.2 -0.7999992 5.07 2.3 0.3000011 -0.2600002
## 52 1999 4.66 2.2 20.0 18.6 -1.3999996 4.81 1.6 -0.7999992 -0.1500001
## 53 2000 5.85 3.4 20.9 18.4 -2.5000000 4.66 2.2 -1.3999996 1.1900001
## 54 2001 3.45 2.8 19.8 18.6 -1.1999989 5.85 3.4 -2.5000000 -2.3999999
## 55 2002 1.62 1.6 17.9 19.4 1.5000000 3.45 2.8 -1.1999989 -1.8300000
## 56 2003 1.02 2.3 16.5 19.9 3.3999996 1.62 1.6 1.5000000 -0.6000000
## cinf cdef y77
## 51 -0.6999999 -1.1000004 1
## 52 0.6000000 -0.6000004 1
## 53 1.2000000 -1.1000004 1
## 54 -0.6000001 1.3000011 1
## 55 -1.1999999 2.6999989 1
## 56 0.6999999 1.8999996 1