TD_FTest Example | F Test | Specify Sample Variances - Using FirstSampleVariance and SecondSampleVariance Arguments - 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
2024-04-06
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Product Category
Teradata Vantageā„¢

TD_FTest Input

With two sample variances instead of two sample columns, you do not need InputTable.

TD_FTest SQL Call

SELECT * FROM td_ftest (
USING
FirstSampleVariance (1385.61)
SecondSampleVariance (521.22)
DF1 (9)
DF2 (19)
) AS dt;

TD_FTest Output

    firstsamplevariance    secondsamplevariance           varianceratio                   df1                   df2           CriticalValue                   Alpha                 p_value  Conclusion
---------------------------------------------------------------------------
 1.38561000000000E 003   5.21220000000000E 002   2.65839760561759E 000                     9                    19   2.88005204672380E 000   5.00000000000000E-002   6.96764431913391E-002  Fail to reject Null hypothesis