We run one last regression on abortion politics, including only the dummy variable for rural locale. What is our reference group in this case? Explain the results. Given the three relationships we've explored here in these three regressions, what do think is going on here? What's the best way to express the statistical relationship between support for abortion rights and where one grew up?

. regress abort rural

Source |SSdfMSNumber of obs=305

-------------+----------------------------------F(1, 303)=4.33

Model |9.0010037719.00100377Prob > F=0.0383

Residual |629.7334223032.07832813R-squared=0.0141

-------------+----------------------------------Adj R-squared=0.0108

Total |638.7344263042.10110009Root MSE=1.4416

------------------------------------------------------------------------------

abort |Coef.Std. Err.tP>|t|[95% Conf. Interval]

-------------+----------------------------------------------------------------

rural |-.3831551.1841137-2.080.038-.7454585-.0208516

_cons |3.077273.097195431.660.0002.8860093.268536