Wooldridge Source: R.H. Dehejia and S. Wahba (1999), “Causal Effects in Nonexperimental Studies: Reevaluating the Evaluation of Training Programs,” Journal of the American Statistical Association 94, 1053-1062. Professor Sergio Firpo, at the University of British Columbia, has used this data set in his recent work, and he kindly provided it to me. This data set is a subset of that originally used by Lalonde in the study cited for JTRAIN2.RAW. Data loads lazily.

data('jtrain3')

Format

A data.frame with 2675 observations on 20 variables:

  • train: =1 if in job training

  • age: in years, 1977

  • educ: years of schooling

  • black: =1 if black

  • hisp: =1 if Hispanic

  • married: =1 if married

  • re74: '74 earnings, $1000s '82

  • re75: '75 earnings, $1000s '82

  • unem75: =1 if unem. all of '75

  • unem74: =1 if unem. all of '74

  • re78: '78 earnings, $1000s '82

  • agesq: age^2

  • trre74: train*re74

  • trre75: train*re75

  • trun74: train*unem74

  • trun75: train*unem75

  • avgre: (re74 + re75)/2

  • travgre: train*avgre

  • unem78: =1 if unem. all of '78

  • em78: 1 - unem78

Source

https://www.cengage.com/cgi-wadsworth/course_products_wp.pl?fid=M20b&product_isbn_issn=9781111531041

Used in Text

pages 340-341, 480-481

Examples

str(jtrain3)
#> 'data.frame': 2675 obs. of 20 variables: #> $ train : int 1 1 1 1 1 1 1 1 1 1 ... #> $ age : int 37 30 27 33 22 23 32 22 19 21 ... #> $ educ : int 11 12 11 8 9 12 11 16 9 13 ... #> $ black : int 1 1 1 1 1 1 1 1 1 1 ... #> $ hisp : int 0 0 0 0 0 0 0 0 0 0 ... #> $ married: int 1 0 0 0 0 0 0 0 0 0 ... #> $ re74 : num 0 0 0 0 0 0 0 0 0 0 ... #> $ re75 : num 0 0 0 0 0 0 0 0 0 0 ... #> $ unem75 : int 1 1 1 1 1 1 1 1 1 1 ... #> $ unem74 : int 1 1 1 1 1 1 1 1 1 1 ... #> $ re78 : num 9.93 24.91 7.51 0.29 4.06 ... #> $ agesq : int 1369 900 729 1089 484 529 1024 484 361 441 ... #> $ trre74 : num 0 0 0 0 0 0 0 0 0 0 ... #> $ trre75 : num 0 0 0 0 0 0 0 0 0 0 ... #> $ trun74 : int 1 1 1 1 1 1 1 1 1 1 ... #> $ trun75 : int 1 1 1 1 1 1 1 1 1 1 ... #> $ avgre : num 0 0 0 0 0 0 0 0 0 0 ... #> $ travgre: num 0 0 0 0 0 0 0 0 0 0 ... #> $ unem78 : int 0 0 0 0 0 1 0 0 0 0 ... #> $ em78 : int 1 1 1 1 1 0 1 1 1 1 ... #> - attr(*, "time.stamp")= chr "25 Jun 2011 23:03"