Wooldridge Source: See GPA2.RAW Data loads lazily.
data('gpa3')A data.frame with 732 observations on 23 variables:
term: fall = 1, spring = 2
sat: SAT score
tothrs: total hours prior to term
cumgpa: cumulative GPA
season: =1 if in season
frstsem: =1 if student's 1st semester
crsgpa: weighted course GPA
verbmath: verbal SAT to math SAT ratio
trmgpa: term GPA
hssize: size h.s. grad. class
hsrank: rank in h.s. class
id: student identifier
spring: =1 if spring term
female: =1 if female
black: =1 if black
white: =1 if white
ctrmgpa: change in trmgpa
ctothrs: change in total hours
ccrsgpa: change in crsgpa
ccrspop: change in crspop
cseason: change in season
hsperc: percentile in h.s.
football: =1 if football player
https://www.cengage.com/cgi-wadsworth/course_products_wp.pl?fid=M20b&product_isbn_issn=9781111531041
pages 246-248, 273, 297-298, 478
str(gpa3)
#> 'data.frame': 732 obs. of 23 variables:
#> $ term : int 1 2 1 2 1 2 1 2 1 2 ...
#> $ sat : int 920 920 780 780 810 810 1080 1080 960 960 ...
#> $ tothrs : int 31 43 28 43 0 14 0 17 91 106 ...
#> $ cumgpa : num 2.25 2.04 2.03 2.09 0 ...
#> $ season : int 0 1 0 1 0 1 1 0 1 0 ...
#> $ frstsem : int 0 0 0 0 1 0 1 0 0 0 ...
#> $ crsgpa : num 2.65 2.51 2.87 2.88 2.76 ...
#> $ verbmath: num 0.484 0.484 0.814 0.814 0.884 ...
#> $ trmgpa : num 1.5 2.25 2.2 1.6 1.6 ...
#> $ hssize : int 10 10 123 123 119 119 318 318 383 383 ...
#> $ hsrank : int 4 4 102 102 42 42 31 31 66 66 ...
#> $ id : num 22 22 35 35 36 36 156 156 246 246 ...
#> $ spring : int 0 1 0 1 0 1 0 1 0 1 ...
#> $ female : int 1 1 0 0 0 0 0 0 0 0 ...
#> $ black : int 0 0 0 0 0 0 0 0 0 0 ...
#> $ white : int 0 0 1 1 1 1 1 1 1 1 ...
#> $ ctrmgpa : num NA 0.75 NA -0.6 NA ...
#> $ ctothrs : int NA 12 NA 15 NA 14 NA 17 NA 15 ...
#> $ ccrsgpa : num NA -0.139 NA 0.016 NA ...
#> $ ccrspop : num NA -62.2 NA -73.2 NA ...
#> $ cseason : int NA 1 NA 1 NA 1 NA -1 NA -1 ...
#> $ hsperc : num 40 40 82.9 82.9 35.3 ...
#> $ football: int 0 0 0 0 0 0 0 0 0 0 ...
#> - attr(*, "time.stamp")= chr "25 Jun 2011 23:03"