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Isolating The Key Variables For Regression Models In Enterprise Software Acquisition Decisions: A Blocking Technique

Author

Listed:
  • Rolando Pena-Sanchez
  • Jacques Verville
  • Christine Bernadas

    (Métis Lab EM Normandie - EM Normandie - École de Management de Normandie)

Abstract

Often researchers in the field of information systems face problems related to the variable selection for model building; as well as difficulties associated to their data (small sample and/or non normality). The goal of this article is to present an original statistical blocking technique based on relative variability for screening of variables in multivariate regression models. We applied the blocking-technique and a nonparametric bootstrapping method to the data collected on the USA-South border for a research concerning enterprise software (ES) acquisition contracts. Three mutually exclusive blocks of relative variability for the response variables were formed and their corresponding regression models were built and explained. A conclusion was drawn about the decreasing tendency on the adjusted coefficient of determination (R2adj) magnitudes when the blocks change from low (L) to high (H) condition of relative variability. The obtained models (via stepwise regression) exhibited significant p-values (0.0001).

Suggested Citation

  • Rolando Pena-Sanchez & Jacques Verville & Christine Bernadas, 2011. "Isolating The Key Variables For Regression Models In Enterprise Software Acquisition Decisions: A Blocking Technique," Post-Print hal-03218616, HAL.
    • Handle: RePEc:hal:journl:hal-03218616
    DOI: 10.19030/jber.v5i8.2570
    as

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