clusrank: Wilcoxon Rank Tests for Clustered Data

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## clusrank: Wilcoxon Rank Tests for Clustered Data
##
## Copyright (C) 2015-2024 Yujing Jiang, Mei-Ling Ting Lee, and Jun Yan
## Copyright (C) 2022-2024 Wenjie Wang
##
## This file is part of the R package clusrank.
##
## The R package clusrank is free software: You can redistribute it and/or
## modify it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or any later
## version (at your option). See the GNU General Public License at
## <https://www.gnu.org/licenses/> for details.
##
## The R package clusrank is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
##


##' Clustered Non-Stratified Data for Testing Clustered Rank Sum Test
##'
##' Non-stratified data including 3 variables:
##'  id, z, group. Have some missing values.
##'
##' @format
##' A data frame with 340 observations on 3 variables.
##'
##' [, 1] id    cluster id
##'
##' [, 2] z     score
##'
##' [, 3] group group id
##'
##' @name crd
##' @docType data
##' @source \url{https://sites.google.com/a/channing.harvard.edu/bernardrosner/channing/incorporating-cluster-effects-for-
##' the-wilcoxon-rank-sum-test-1/cluswilcox/sample_data}
##' @keywords datasets internal
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