TD_DURBIN_WATSON Function Examples | Teradata Vantage - TD_DURBIN_WATSON Examples - Teradata Vantage

Database Unbounded Array Framework Time Series Functions

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-10-04
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TD_DURBIN_WATSON Input Table LR_RESIDUALS from ARTFITRESIDUALS Layer of TD_LINEAR_REGR

Dept ROW_I X1 ACTUAL_VALUE CALC_VALUE RESIDUAL
10 0 131.5279032 20299.98 18459.4817394763 1840.4982605236
10 1 126.4420645 34932.26 18477.032352320 16455.22764768
10 2 126.4420645 15223.23 18477.032352320 3253.8023523200
10 3 203.0642742 499.95 18212.618394859 17712.668394859
... ... ... ... ... ...

Example: TD_DURBIN_WATSON Call for Statistically Testing Residuals Generated During Linear Regression

EXECUTE FUNCTION INTO VOLATILE ART(LR_DW)
TD_DURBIN_WATSON(
   ART_SPEC( TABLE_NAME(LR_RESIDUALS)),
   FUNC_PARAMS(EXPLANATORY_COUNT(1),INCLUDE_CONSTANT(1),METHOD(DW_FORMULA),
      SIGNIFICANCE_LEVEL(.05) )
);

TD_DURBIN_WATSON Output for Statistically Testing Residuals Generated During Linear Regression

SELECT * FROM LR_DW;
DEPT 10
ROW_I 0
NUM_SAMPLES 6436
EXPLANATORY_COUNT 1
CONSTANT 1
METHOD DW_FORMUL
DW_VALUE 2.029198198718
DL_VALUE 1.938088888888
DU_VALUE 1.939668333333
SIGNIFICANCE_LEVEL 0.5
NULL_HYPOTH ACCEPT

Example: TD_DURBIN_WATSON Call for Statistically Testing Residuals Generated During ARMA Estimation

EXECUTE FUNCTION INTO VOLATILE ART(SAV_AR1_DW)
TD_DURBIN_WATSON(
   SERIES_SPEC( TABLE_NAME(AR1_RESIDUALS), SERIES_ID(DatasetID),  
      ROW_AXIS(SEQUENCE(ROW_I)), PAYLOAD( FIELDS(RESIDUAL), CONTENT(REAL) )),
   FUNC_PARAMS(EXPLANATORY_COUNT(1),INCLUDE_CONSTANT(1),METHOD(DW_FORMULA),
      SIGNIFICANCE_LEVEL(.05) )
);

TD_DURBIN_WATSON Output for Statistically Testing Residuals Generated During ARMA Estimation

SELECT * FROM SAV_AR1_DW;
DataSetID 552
ROW_I 0
NUM_SAMPLES 72
EXPLANATORY_COUNT 1
CONSTANT 1
METHOD DW_FORMUL
DW_VALUE 2.27022359754319E 000
DL_VALUE 1.58900000000000E 000
DU_VALUE 1.64540000000000E 000
SIGNIFICANCE_LEVEL 5.00000000000000E-002
NULL_HYPOTH ACCEPT