Residuals in nonlinear regression

R. D. Cook, Chih Ling Tsai

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We employ a quadratic expansion to investigate the behaviour of the ordinary residuals in nonlinear regression. These residuals can produce misleading results when used in diagnostic methods analogous to those for linear regression. We suggest a new type of residual that overcomes many of the potential shortcomings of the ordinary residuals.

Original languageEnglish (US)
Pages (from-to)23-29
Number of pages7
Issue number1
StatePublished - Apr 1 1985


  • Diagnostic
  • Intrinsic curvature array
  • Projected residual

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