twoyear

Data loads lazily. Type data(twoyear) into the console.

datasets

Economics students new to both econometrics and R may find the
simultaneous introduction to both challenging. In particular, the process of
loading and preparing data before building one's first model can present
challenges. The `wooldridge` data package aims to lighten the task by loading
any data set from the text into the current working environment with a single command.
The package contains documentation for each set and all data has been
compressed to 62.73% of its original size. Just install the package, load it,
and use the `data()` function to call the data set you need to work with.
In addition, a wooldridge-vignette illustrates solutions to examples from
each chapter of the text, offering a relevant introduction to econometric
modelling with R. The vignette also includes an Appendix to helpful resources
about using R for econometrics. Note: Data sets are from the 5th edition
(Wooldridge 2013, ISBN-13:978-1-111-53104-1), and are compatible with others.

Justin Shea

wooldridge

105 Data Sets from "Introductory Econometrics: A Modern
Approach" by Jeffrey M. Wooldridge

twoyear function

A data.frame with 6763 rows and 23 variables:<ul>
<li>female. =1 if female</li>
<li>phsrank. percent high school rank; 100 = best</li>
<li>BA. =1 if Bachelor's degree</li>
<li>AA. =1 if Associate's degree</li>
<li>black. =1 if African-American</li>
<li>hispanic. =1 if Hispanic</li>
<li>id. ID Number</li>
<li>exper. total (actual) work experience</li>
<li>jc. total 2-year credits</li>
<li>univ. total 4-year credits</li>
<li>lwage. log hourly wage</li>
<li>stotal. total standardized test score</li>
<li>smcity. =1 if small city, 1972</li>
<li>medcity. =1 if med. city, 1972</li>
<li>submed. =1 if suburb med. city, 1972</li>
<li>lgcity. =1 if large city, 1972</li>
<li>sublg. =1 if suburb large city, 1972</li>
<li>vlgcity. =1 if very large city, 1972</li>
<li>subvlg. =1 if sub. very lge. city, 1972</li>
<li>ne. =1 if northeast</li>
<li>nc. =1 if north central</li>
<li>south. =1 if south</li>
<li>totcoll. jc + univ</li>
</ul>

twoyear: twoyear

Description

Usage

Arguments

Format

Examples