% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/data.R
\docType{data}
\name{fracreg_k401k}
\alias{fracreg_k401k}
\title{401(k) Plan Participation Data}
\format{
A data frame with 1,534 observations and 10 variables:
\describe{
  \item{prate}{Participation rate: proportion of eligible employees participating in the 401(k) plan (0 to 1).}
  \item{mrate}{Match rate: the firm's contribution matching rate per dollar.}
  \item{totpart}{Total number of participants.}
  \item{totelg}{Total number of eligible employees.}
  \item{age}{Age of the 401(k) plan in years.}
  \item{totemp}{Total number of firm employees.}
  \item{sole}{Indicator variable: 1 if the 401(k) is the sole retirement plan offered.}
  \item{ltotemp}{Natural log of total employees.}
  \item{age_sq}{Square of plan age.}
  \item{mrate_sq}{Square of match rate.}
}
}
\source{
Papke, L. E., & Wooldridge, J. M. (1996). "Econometric Methods for Fractional Response Variables with an Application to 401(k) Plan Participation Rates." Journal of Applied Econometrics, 11(6), 619-632.
}
\usage{
data("fracreg_k401k")
}
\description{
A cross-sectional dataset on 401(k) plan participation rates and firm characteristics, 
widely used in empirical applications of fractional response models 
(e.g., Papke & Wooldridge, 1996). The data is derived from the 'wooldridge' package.
}
\examples{
data("fracreg_k401k")
summary(fracreg_k401k$prate)
}
\keyword{datasets}
