Z-score scale using the compare function

User Questions
1

Hi Daniel,

I am using the compare function in MEGAN 6.5.7 to compare proportions of bacterial taxa between several samples and was wondering what parameters the Z-score scale is based on. Is the Z-score for each group based on each group’s SD and/mean or the entire groups SD and/mean.

Thanks,
Nsa

2

Dear NSA,

for each group, the Z-score is based on the mean and SD for that group only.
For example, the Z-score for Firmicutes is based on the Firmicutes counts of all samples, but not on any other taxonomic groups.
Is that what you want?

Best wishes
daniel

1 Like