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st: Group-mean equality test
From
lreine ycenna <[email protected]>
To
[email protected]
Subject
st: Group-mean equality test
Date
Wed, 10 Aug 2011 16:14:51 +0100
Hi All,
I am looking for an easier way to calculate the mean values for each
of my variables for different time horizons (e.g. variable x from
1985-1990, 1991-1996..etc) and at the same time test the signficance
(t-stats) for the changes between the means for these periods within
each variable itself. I manage to go from egen meanedu= mean(edu) if
year < 1991 & year > 1979 & country==GBR. and the same for the next 5
year period..etc. Though this only gives me the mean values for the
time periods wanted, how do I then test the significance for the
changes using ttest?
year code edu
1973 GBR 0.6096253
1974 GBR 0.5443353
1975 GBR 0.5181908
1976 GBR 0.3762168
1977 GBR 0.5183734
1978 GBR 0.3920778
1979 GBR 0.4526944
1980 GBR 0.4694474
1981 GBR 0.3979259
1982 GBR 0.3916153
1983 GBR 0.2517771
1984 GBR 0.2545344
1985 GBR 0.2207009
1986 GBR 0.1595718
1987 GBR 0.30558
1988 GBR 0.2499627
1989 GBR 0.4576487
1990 GBR 0.5781643
1991 GBR 0.5855764
1992 GBR 0.4679879
1993 GBR 0.3789743
1994 GBR 0.6381156
1995 GBR 0.6055152
1996 GBR 0.4644643
1997 GBR 0.195214
1998 GBR 0.2751569
1999 GBR 0.4539562
2000 GBR 0.46502
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