Load packages library(tidyverse) Motivation Z-scores (z-values) are a useful and widely employed tool to gauge and compare measurements. For instance, z-scores help to compare the relative position of some measurements with respect to their distributions. In this post, we will prove some basic (algebraic) properties of z-values. There’s nothing new to that, it’s just I’d like to have it neat and concise somewhere to quickly find it. I’ll add some explanation for the ease of …