Normalization by Log Ratio in Standard Deviation Units 

Assume that there are n rows with k variables, A, B, C, D, E, F and G, in the data. We use variable E as an example in the calculations below. All target variables are normalized in the same way.

If we select A as baseline variable the normalized value of e_i for variable E in the ith row is calculated as:

where

std = the standard deviation

a_i = the value for variable A in the ith row.

See also:

Normalizing Columns