TD_FTest Output - Analytics Database

Database Analytic Functions

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-10-04
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lifecycle
latest
Product Category
Teradata Vantageā„¢

Output Table Schema

The function produces an output table as follows.

Column Data Type Description
FirstSampleVariance DOUBLE PRECISION Variance of first sample population.
SecondSampleVariance DOUBLE PRECISION Variance of second sample population.
VarianceRatio DOUBLE PRECISION FirstSampleVariance/SecondSampleVariance
DF1 INTEGER Degrees of freedom of first sample.
DF2 INTEGER Degrees of freedom of second sample.
CriticalValue DOUBLE PRECISION Critical value calculated using Alpha for test.
Alpha DOUBLE PRECISION alpha (seeOptional Syntax Elements for TD_FTest).
p_value DOUBLE PRECISION Probability associated with F-test statistic.
Conclusion VARCHAR F-test result, either 'reject null hypothesis' or 'fail to reject null hypothesis'.