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\format{
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\format{
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  There are three \sQuote{freeny} data sets.
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  There are three \sQuote{freeny} data sets.
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  \code{freeny.y} is a time series with 39 observations on quarterly
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  \code{freeny.y} is a time series with 39 observations on quarterly
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  revenue from (1962,2Q) to (1971,4Q).
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  revenue from (1962,2Q) to (1971,4Q).
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  \code{freeny.x} is a matrix of explanatory variables.  The columns
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  \code{freeny.x} is a matrix of explanatory variables.  The columns
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  are \code{freeny.y} lagged 1 quarter, price index, income level, and
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  are \code{freeny.y} lagged 1 quarter, price index, income level, and
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  market potential.
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  market potential.
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  Finally, \code{freeny} is a data frame with variables \code{y},
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  Finally, \code{freeny} is a data frame with variables \code{y},