voucher

Data loads lazily. Type data(voucher) 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

voucher function

A data.frame with 990 rows and 19 variables:<ul>
<li>studyid. student identifier</li>
<li>black. = 1 if African-American</li>
<li>hispanic. = 1 if Hispanic</li>
<li>female. = 1 if female</li>
<li>appyear. year of first application: 90 to 93</li>
<li>mnce. math NCE test score, 1994</li>
<li>select. = 1 if ever selected to attend choice school</li>
<li>choice. = 1 if attending choice school, 1994</li>
<li>selectyrs. years selected to attend choice school</li>
<li>choiceyrs. years attended choice school</li>
<li>mnce90. mnce in 1990</li>
<li>selectyrs1. = 1 if selectyrs == 1</li>
<li>selectyrs2. = 1 if selectyrs == 2</li>
<li>selectyrs3. = 1 if selectyrs == 3</li>
<li>selectyrs4. = 1 if selectyrs == 4</li>
<li>choiceyrs1. = 1 if choiceyrs == 1</li>
<li>choiceyrs2. = 1 if choiceyrs == 2</li>
<li>choiceyrs3. = 1 if choiceyrs == 3</li>
<li>choiceyrs4. = 1 if choiceyrs == 4</li>
</ul>

voucher: voucher

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