This data set is adapted from the 2000 Census (5% sample, person records). It is restricted to programmers and engineers in the Silicon Valley area.
The variable codes, e.g. occupational codes, are available from the Census Bureau, at http://www.census.gov/prod/cen2000/doc/pums.pdf. (Short code lists are given in the record layout, but longer ones are in the appendix Code Lists.)
The variables are:
age, with a U(0,1) variate added for jitter
cit, citizenship; 1-4 code various categories of
citizens; 5 means noncitizen (including permanent residents
educ: 01-09 code no college; 10-12 means some college;
13 is a bachelor's degree, 14 a master's, 15 a professiona deal and
16 is a doctorate
birth, place of birth
wageinc, wage income
wkswrkd, number of weeks worked
yrentry, year of entry to the U.S. (0 for natives)
powpuma, location of work
gender, 1 for male, 2 for female
The convenience function
optionally creating dummies from the factors, and producing
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