Description Usage Format Used in Text Source Examples
Wooldridge Source: Compiled by Professor Charles Ballard, Michigan State University Department of Economics. Professor Ballard kindly provided the data. Data loads lazily.
1 | data('econmath')
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A data.frame with 856 observations on 17 variables:
age: age in years
work: hours worked per week
study: hours studying per week
econhs: =1 if economics in high school
colgpa: college GPA, beginning semester
hsgpa: high school GPA
acteng: ACT English score
actmth: ACT math score
act: ACT composite
mathscr: math quiz score, 0-10
male: =1 if male
calculus: =1 if taken calculus course
attexc: =1 if past attndce 'excellent'
attgood: =1 if past attndce 'good'
fathcoll: =1 if father has BA
mothcoll: =1 if mother has BA
score: course score, in percent
167, 185
http://www.cengage.com/c/introductory-econometrics-a-modern-approach-6e-wooldridge
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'data.frame': 856 obs. of 17 variables:
$ age : int 23 23 21 22 22 22 22 22 22 21 ...
$ work : num 15 0 25 30 25 0 20 20 28 22.5 ...
$ study : num 10 22.5 12 40 15 30 25 15 7 25 ...
$ econhs : int 0 1 0 0 1 0 1 0 0 0 ...
$ colgpa : num 3.49 2.1 3.09 2.68 3.75 ...
$ hsgpa : num 3.35 3.22 3.31 3.98 3.89 ...
$ acteng : int 24 23 21 31 28 25 15 28 28 18 ...
$ actmth : int 26 20 24 28 31 30 19 30 28 19 ...
$ act : int 27 24 21 31 32 28 18 32 30 17 ...
$ mathscr : int 10 9 8 10 8 10 9 9 6 9 ...
$ male : int 1 1 1 0 1 1 0 1 0 0 ...
$ calculus: int 1 0 1 1 1 1 1 1 0 1 ...
$ attexc : int 0 0 1 0 0 1 0 1 1 0 ...
$ attgood : int 0 0 0 1 1 0 1 0 0 1 ...
$ fathcoll: int 1 0 0 1 0 0 0 1 0 0 ...
$ mothcoll: int 1 1 1 1 1 1 0 1 1 0 ...
$ score : num 84.4 57.4 66.4 81.2 95.9 ...
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