#' happiness
#'
#' Wooldridge Data loads lazily.
#'
#' @section
#'
#'
#'
#' @docType data
#'
#' @usage data('happiness')
#'
#' @format A data.frame with 17137 observations on 33 variables:
#' \itemize{
#' \item \strong{year:} gss year for this respondent
#' \item \strong{workstat:} work force status
#' \item \strong{prestige:} occupational prestige score
#' \item \strong{divorce:} ever been divorced or separated
#' \item \strong{widowed:} ever been widowed
#' \item \strong{educ:} highest year of school completed
#' \item \strong{reg16:} region of residence, age 16
#' \item \strong{babies:} household members less than 6 yrs old
#' \item \strong{preteen:} household members 6 thru 12 yrs old
#' \item \strong{teens:} household members 13 thru 17 yrs old
#' \item \strong{income:} total family income
#' \item \strong{region:} region of interview
#' \item \strong{attend:} how often r attends religious services
#' \item \strong{happy:} general happiness
#' \item \strong{owngun:} =1 if own gun
#' \item \strong{tvhours:} hours per day watching tv
#' \item \strong{vhappy:} =1 if 'very happy'
#' \item \strong{mothfath16:} =1 if live with mother and father at 16
#' \item \strong{black:} =1 if black
#' \item \strong{gwbush04:} =1 if voted for G.W. Bush in 2004
#' \item \strong{female:} =1 if female
#' \item \strong{blackfemale:} black*female
#' \item \strong{gwbush00:} =1 if voted for G.W. Bush in 2000
#' \item \strong{occattend:} =1 if attend is 3, 4, or 5
#' \item \strong{regattend:} =1 if attend is 6, 7, or 8
#' \item \strong{y94:} =1 if year == 1994
#' \item \strong{y96:}
#' \item \strong{y98:}
#' \item \strong{y00:}
#' \item \strong{y02:}
#' \item \strong{y04:}
#' \item \strong{y06:} =1 if year == 2006
#' \item \strong{unem10:} =1 if unemployed in last 10 years
#' }
#' @source \url{https://www.cengage.com/cgi-wadsworth/course_products_wp.pl?fid=M20b&product_isbn_issn=9781111531041}
#' @examples str(happiness)
"happiness"
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