Measuring the Standard Deviation of a Population - Analytics Database - Teradata Vantage

SQL Functions, Expressions, and Predicates

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-01-12
dita:mapPath
obm1628111499646.ditamap
dita:ditavalPath
qkf1628213546010.ditaval
dita:id
kby1472250656485
lifecycle
latest
Product Category
Teradata Vantageā„¢

If your data represents only a sample of the entire population for the variable, then use the STDDEV_SAMP function. For information, see STDDEV_SAMP.

As the sample size increases, the values for STDDEV_SAMP and STDDEV_POP approach the same number, but you should always use the more conservative STDDEV_SAMP calculation unless you are absolutely certain that your data constitutes the entire population for the variable.