TD_FTest Function Example | Teradata Vantage - TD_FTest Example: Specify Two Sample Columns - Teradata® Database

Input

SQL Call

SELECT * FROM td_ftest (
  ON example_table AS InputTable
  USING
  FirstSampleColumn ('A')
  SecondSampleColumn ('B')
) AS dt;

Output

 
   firstsamplevariance    secondsamplevariance           varianceratio          df1          df2           CriticalValue                   Alpha                 p_value  Conclusion
----------------------  ----------------------  ----------------------  -----------  -----------  ----------------------  ----------------------  ----------------------  ----------------------------------------------------------------
 1.38561111111111E 003   5.21221052631579E 002   2.65839436859915E 000            9           19   2.88005204672380E 000  5.00000000000000E-002   6.96767848508086E-002  Fail to reject Null hypothesis