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**Sample Do-File to Accompany Stata Fundamentals**
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*Open the data set
*You will have to alter this command to match the directory where you saved the sample data set
use "U:\wage.dta", clear

*describe the data set
describe

*summarize all variables
summarize

*generate variables that will be used in regressions

generate wage=wkly_earn/wkly_hours
generate lwage=log(wkly_earn)

generate female=sex==2
tab female

generate highschool=education==39|education==40
generate college=education>40

generate agesq=age^2

*log wage regressions
regress lwage age agesq female highschool college

*probit
probit employed age female highschool college
mfx