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A measure that describes how well a model fits the data. The most common goodness-of-fit measure is R-Square.

Typically, goodness-of-fit measures either:

  • Have a value between 0 and 1, where 1 indicates a perfect fit and 0 indicates no fit.
  • Have a minimum of 0, where 0 indicates a perfect fit and higher numbers indicate worse fits.

Also known as

  • Fitness
  • Fit
  • Goodness of fit
  • GOF