, Volume 42, Issue 1, pp 119–125 | Cite as

Pyrrho's lemma, or have it your way

  • Theo K. Dijkstra


A simple lemma is derived to support the claim that regression models can be manipulated to a very large extent: by simply adding one regressor one can obtain essentially every set of desired regression coefficients and predictions as well ast-values and standard errors. Consequently, if the product of a specification search is not shown to be generalizable, a sceptical attitude towards its validity is well-founded.


Standard Error Regression Model Regression Coefficient Stochastic Process Probability Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Physica-Verlag 1995

Authors and Affiliations

  • Theo K. Dijkstra
    • 1
  1. 1.Faculty of EconomicsUniversity of GroningenGroningenThe Netherlands

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