Z-Score Function | Vantage Analytics Library - Z-Score - Vantage Analytics Library

Vantage Analytics Library User Guide

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
Lake
VMware
Product
Vantage Analytics Library
Release Number
2.2.0
Published
March 2023
Language
English (United States)
Last Update
2024-01-02
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Product Category
Teradata Vantage

Use the Z-Score transformation to rescale numeric columns to the Z-scores based on the mean value and standard deviation of the column values. Each column value transforms into the number of standard deviations from the mean value of the column, using this formula:


Number of standard deviations away from mean

These nonlinear transformations are more useful in data mining than a linear Rescale transformation.

You can apply the Z-Score transformation to columns of any numeric type, including date types.