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Computer Programs: Interior Analysis of the Observations in Multiple Linear Regression

Summary: A computer program for performing two diagnostic procedures suggested by Daniel and Wood for a multiple regression model is presented. The first procedure is designed to detect points that are remote in x-space and that may be overly influential on the model summary statistics. The second procedure allows the analyst to identify pairs of points that are near neighbors in x-space and to compute an estimate of pure error using the residuals at these points. Two examples are given.

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  • Topics:
  • Keywords: Influential observations,Goodness of fit,Error
  • Author: Montegomery, Douglas C.; Martin, Edith W.; Peck, Elizabeth A.
  • Journal: Journal of Quality Technology