Table 2 Applied analytical tools.
Analysis | Methods/models | Purpose | Source | Used R packages |
|---|---|---|---|---|
Cluster analysis | Partitioning around medoids—manhattan distance | Country grouping based on CE use | Kassambara, 2017 | cluster, factoextra |
Silhouette analysis | Optimal number of clusters | Struyf et al. (1996) | factoextra | |
Regression model assumptions | F-test, Hausman test, Breusch-Pagan | Evaluation of assumptions and selection of an appropriate model | Wooldridge, 2010 | plm, lmtest, |
Panel regression analysis | Random effect model (white estimator), within effect model (Arellano estimator) | Quantifying the significance of selected relationships | plm, sandwich |
