In a nutshell
- Select your
rank of interest (e.g. Family)
- Select a statistical test and press "Select Mode"
- Press "Do Stats"
- Click on "P" in the table to sort the bacterial groups by p-value.
- The p-value distribution (histogram)
on the left side of the figure indicates if low (significant) p-values are relevant
or observed poorly by chance. A uniform p-value distribution indicates that low
p-values were observed by chance. The uniform (expected) p-value distribution is
indicated by the red line "Expected". An increase of low p-values (a negative binominal
distribution with small r) indicates that low
p-values are relevant (significant) and that the compared groups are different.