These are data from the 2009 NHIS survey. People who have read Mastering 'Metrics should recognize these data. They're featured prominently in that book and the authors' discussion of random assignment and experiments.
A data frame with 18790 observations on the following 10 variables.
is the respondent a woman?
a numeric vector for whether respondent has at least some health insurance
a numeric vector for a health index, broadly understood
is the respondent not white?
the respondent's age in years
the respondent's total years of education
the size of the respondent's family
is the respondent employed
the respondent's household/family income
a numeric vector for weight
National Health Interview Survey (2009).
Data are already cleaned in a way that facilitates an easy replication of Table 1.1 in Mastering 'Metrics. Check http://www.masteringmetrics.com for more information.