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\name{gen.data}
\alias{gen.data}
\title{Generate Data With Contamination}
\description{
Generates a random dataset with some amount of contaimination.
}
\usage{
gen.data(coeff, n = 100, eps = 0.1, sig = 3, snr = 1/20, seed = 837)
}
\arguments{
\item{coeff}{a numeric vector of length 3 containing the true coefficients.}
\item{n}{a positive integer giving the number of observations in the data set.}
\item{eps}{a numeric value between 0 and 0.5 specifying the fraction of contamination.}
\item{sig}{a positive numeric value giving the standard deviation of the uncontaminated data.}
\item{snr}{a positive numeic value giving the signal to noise ratio, well not really.}
\item{seed}{an integer value giving the seed for the random number generator.}
}
\value{
a data frame with \code{n} rows and 4 columns. The regressors are generated as: \code{rnorm(n,1)}, \code{rnorm(n,1)^3}, \code{exp(rnorm(n,1))}. It also generates an unused vector \code{x4}.
}
\keyword{utilities}
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