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A dataset from a survey of sexual behavior
data(r99)
A data frame with 6136 rows and 5 variables
This data frame contains the following variables:
y: Response to the survey (1=yes, 0=no)
gender: 0=male; 1=female
fac: the student's faculty (1=medical/dental/veterinary, 0=other)
genderbyfac: the product of gender and fac
g: an indicator of missing status (0=observed, 1=missing) for y