Hey, is there any "z-score" for sparse data like our count tables? I'd like somehow to compare how far a sample is from a group of samples;
I have my ASV table, and let's say I take a taxon on genus level:
In my data, many samples have relative frequency equals to 0 of this taxon, but some of them have values like 0.002, 0.004 etc
Now I'd like to somehow measure how many kind of "standard deviations" my sample is far from the rest. I guess using a normal distribution is pointless...
Is there any good way to make such comparison?