Mroz87
data frame contains data about 753 married women.
These data are collected within the "Panel Study of Income Dynamics" (PSID).
Of the 753 observations, the first 428 are for women with positive hours
worked in 1975, while the remaining 325 observations are for women who
did not work for pay in 1975. A more complete discussion of the data is
found in Mroz (1987), Appendix 1.data(Mroz87)
car
: The Companion to Applied Regression Libary -
An R and S-PLUS Companion to Applied Regression,