Regression transformation diagnostics for explanatory variables

Bo Cheng Wei, Fred J. Hickernell

Research output: Contribution to journalJournal articlepeer-review

3 Citations (Scopus)


Two types of diagnostics are presented for the transformation of explanatory variables in regression. One is based on the likelihood displacement proposed by Cook and Weisberg (1982) for assessing the influence of individual cases on the maximum likelihood estimate of a transformation parameter. The other is based on the local influence theory proposed by Cook (1986) for assessing the influence of small perturbations on the parameter estimates. Computations are performed on two data sets to illustrate the usefulness of these diagnostics.

Original languageEnglish
Pages (from-to)433-454
Number of pages22
JournalStatistica Sinica
Issue number2
Publication statusPublished - Apr 1996
Externally publishedYes

Scopus Subject Areas

  • Statistics and Probability
  • Statistics, Probability and Uncertainty

User-Defined Keywords

  • Case deletions
  • Likelihood displacement
  • Local influence
  • Perturbations


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