what scale is likert scale used for what to cluster a cluster in r how to do the cluster analysis in r on ordinal r data what is likert scale in r how many variables are in likert scale what scale do i use for cluster analysis cluster analysis ordinal data why cluster likert how to cluster a cluster in r clustering on ordinal data clustering r ordinal data can r cluster r how to cluster data r how to cluster a likert scale data what scale is r for clustering how to cluster ordinal data in r can r do cluster analysis clustering of ordinal data is called can r do cluster analysis on ordinal data what is the likert scale