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#' ezanders
#'
#' Wooldridge Source: L.E. Papke (1994), “Tax Policy and Urban Development: Evidence from the Indiana Enterprise Zone Program,” Journal of Public Economics 54, 37-49. Professor Papke kindly provided these data. Data loads lazily.
#'
#' @section Notes: These are actually monthly unemployment claims for the Anderson enterprise zone. Papke used annualized data, across many zones and non-zones, in her original analysis.
#'
#' Used in Text: page 377
#'
#' @docType data
#'
#' @usage data('ezanders')
#'
#' @format A data.frame with 108 observations on 25 variables:
#' \itemize{
#' \item \strong{month:} name of month
#' \item \strong{uclms:} unemployment claims
#' \item \strong{ez:} =1 if enterprise zone
#' \item \strong{year:} 1980 through 1988
#' \item \strong{y81:} =1 if year == 1981
#' \item \strong{y82:}
#' \item \strong{y83:}
#' \item \strong{y84:}
#' \item \strong{y85:}
#' \item \strong{y86:}
#' \item \strong{y87:}
#' \item \strong{y88:}
#' \item \strong{luclms:} log(uclms)
#' \item \strong{jan:} =1 if month == JAN
#' \item \strong{feb:}
#' \item \strong{mar:}
#' \item \strong{apr:}
#' \item \strong{may:}
#' \item \strong{jun:}
#' \item \strong{jul:}
#' \item \strong{aug:}
#' \item \strong{sep:}
#' \item \strong{oct:}
#' \item \strong{nov:}
#' \item \strong{dec:}
#' }
#' @source \url{https://www.cengage.com/cgi-wadsworth/course_products_wp.pl?fid=M20b&product_isbn_issn=9781111531041}
#' @examples str(ezanders)
"ezanders"
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