Normalization by Mean 

Assume that there are n rows with seven variables (columns), A, B, C, D, E, F and G, in the data. We use variable E as an example in the calculations below. The remaining variables in the rows are normalized in the same way.

Without rescaling (Baseline variable = None)

The normalized value of e_i for variable E in the ith row is calculated as:

where

p = the number of records used to calculate the mean

Rescaling by a baseline variable

If we select variable A as baseline variable, the normalized value of e_i for variable E in the i^th row is calculated as:

where

p = the number of rows used to calculate the mean

a_j = the value for variable A in the jth record

See also:

Normalizing Columns

Average