Shifting and rescaling data to assure zero mean and unit variance.
Overview
Specifically, when xi, i =1,..., n is a batch of data, its mean is:
m=∑xi/n
and its variance is:
s2 = ∑(xi−m)2)/ν
where,
v is either n or n-1 (choices vary with application).
Standardization replaces each xi with zi = (xi-m)/s. Do not confuse standardization with normalization.
Tag usage
Questions on tag standardized should be about implementation and programming problems, not about the statistical or theoretical properties of the technique. Consider whether your question might be better suited to Cross Validated, the StackExchange site for statistics, machine learning and data analysis.
