rdtelec

Wooldridge Source: See RDCHEM.RAW Data loads lazily.

datasets

Students learning both econometrics and R may find the introduction
to both challenging. The wooldridge data package aims to lighten the task by efficiently
loading any data set found in the text with a single command. Data sets have been
compressed to a fraction of their original size. Documentation files contain page numbers,
the original source, time of publication, and notes from the author suggesting avenues for
further analysis and research. If one needs an introduction to R model syntax, a
vignette contains solutions to examples from chapters of the text.
Data sets are from the 7th edition (Wooldridge 2020, ISBN-13 978-1-337-55886-0),
and are backwards compatible with all previous versions of the text.

Justin Shea

wooldridge

115 Data Sets from "Introductory Econometrics: A Modern
Approach, 7e" by Jeffrey M. Wooldridge

Justin M. Shea

Kennth H. Brown

rdtelec function

A data.frame with 29 observations on 6 variables:<ul>
<li>rd: R&amp;D spending, millions $</li>
<li>sales: firm sales, millions $</li>
<li>rdintens: rd as percent of sales</li>
<li>lrd: log(rd)</li>
<li>lsales: log(sales)</li>
<li>salessq: sales^2</li>
</ul>

Format

According to these data, the R&amp;D/firm size relationship is different in the telecommunications industry than in the chemical industry: there is pretty strong evidence that R&amp;D intensity decreases with firm size in telecommunications. Of course, that was in 1991. The data could easily be updated, and a panel data set could be constructed.
Used in Text: not used

rdtelec: rdtelec

Description

Usage

Arguments

Format

Notes

Examples