I'm calculating the mahalanobis distance between two individuals/vectors of the same pool as it is described in mahalanobis distance between individuals by using https://stats.stackexchange.com/a/48576/163146 as code for R. Now I wonder the following: Is the resulting distance then really between the two individuals or is it in both cases relative to the center? In case of this assumption the distance between two individuals could also be calculated in the following way:
- Calculate distance of the one individual relative to the center
- Calculate distance of the other individual relative to the center
- Sum these distances (in which way ever.. I just recognize that's probably a hint that this can't be true :)
However, just ignoring my thoughts: What's the unit of the distance between two individuals then? Typically it is measured in standard deviations but standard deviations between two individuals? Does that make sense? Can you please shine a bit light on me?