Download Interaction effects and group comparisons

Variables that uniquely identify margins: jobexp black
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Linear Prediction
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Adjusted Predictions of black
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jobexp
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This graph plots the relationship between job experience and income for values of job experience
that range between 1 year and 21 years (the observed range in the data). More specifically,
because education is also in the model and I specified the atmeans option, it plots the
relationship between job experience and income for individuals who have average values of
education (13.16 years). I could have used some other value for education but doing so would
have simply shifted both lines up or down by the same amount. As you see we get two parallel
lines with the black line always 2.55 points below the white line. Doing the same thing for
education,
. quietly margins black, at (educ = (2(1)21)) atmeans
. marginsplot, noci ylabel(#10) scheme(sj) name(intonly_educ)
Variables that uniquely identify margins: educ black
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Linear Prediction
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Adjusted Predictions of black
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educ
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Interaction effects and group comparisons
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