Can I perform Z-score values on percentages? It is correct? Or should I perform Z-values starting from frequencies?
I want to perform Z-score on percentages to 'declosed' my data, as, If I understood right, percentage are compositional data, so they are closed.
My raw data is a cross-tab, with 10 cases on the rows (X), and 8 variables in the columns (Y). Percentages are calculated for each row, and each one sum to 100%. It is right to perform Z-score on them, before running a cluster analysis?