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GOODNESS OF FIT

Statistics Directorate    
French Equivalent: Qualité de l'adjustement

Definition:
In general, the goodness of agreement between an observed set of values and a second set which are derived wholly or partly on a hypothetical basis, that is to say, derive from the “fitting” of a model to the data.

Context:
The term is used especially in relation to the fitting of theoretical distributions to observation and the fitting of regression lines. The excellence of the fit is often measured by some criterion depending on the squares of differences between observed and theoretical value, and if the criterion has a minimum value the corresponding fit is said to be “best”.

Source Publication:
A Dictionary of Statistical Terms, 5th edition, prepared for the International Statistical Institute by F.H.C. Marriott. Published for the International Statistical Institute by Longman Scientific and Technical.

Statistical Theme: Methodological information (metadata)

Created on Sunday, May 19, 2002

Last updated on Monday, April 28, 2003