This paper is concerned with the assessment of the goodness-of-fit of nonlinear models of the type currently being used in the development of the disaggregate, behavioral travel demand approach. A little-known statistic, called the correlation ratio, is defined and derived, and is explored as a substitute for the standard measures. In both theoretical and empirical tests, the correlation ratio is found to be a significantly more useful and appropriate measure of goodness-of-fit. Some further properties of the correlation ratio are examined, and the ratio is found to possess some degree of arbitrariness when applied to typical travel demand models. This arbitrariness, however, only impairs the usefulness of the correlation ratio in the absolute assessment of a model, but not for the comparative assessment of two or more models. Finally, a number of research tasks, relating to the correlation ratio, are identified.

  • Availability:
  • Corporate Authors:


    Radarweg 29
    Amsterdam,   Netherlands  1043 NX
  • Authors:
    • Stopher, P R
  • Publication Date: 1975-3

Media Info

  • Pagination: p. 67-83
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00097655
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1975 12:00AM