IMR | R Documentation |
Column vector of the inverse ratio of Mills
IMR(selection, data = sys.frame(sys.parent()))
selection |
Selection equation. |
data |
Database. |
Return column vector of the inverse ratio of Mills
data(MEPS2001) attach(MEPS2001) selectEq <- dambexp ~ age + female + educ + blhisp + totchr + ins + income IMR(selectEq)
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