I want to perform a z-score standardisation to be able to compare slaughterdata of several lines (in easy terms: different breeds) of pigs.

I found the following formula to calculate the z-score standardisation:

**scipy.stats.zscore(a, axis=0, ddof=0, nan_policy=’propagate’)**

However, I cannot understand how to do this if you want to use the average of a slaughter_variable of each linetype seperately as axis value. (where axis is the axis along which to calculate z-score).

As I have 12 different linetypes and around 20 different slaugther_variables I prefer to not programm and calculate everything seperately.

Is there anybody who has an idea to solve this problem