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1 results

  • Three Steps Towards Robust Regression

  • Howard Wainer, David Thissen
  • Journal:
    Psychometrika / Volume 41 / Issue 1 / March 1976
    Published online by Cambridge University Press:
    01 January 2025, pp. 9-34

  • The three most commonly used statistics, the arithmetic mean, variance, and the product-moment correlation, are most unfortunate choices when data are not strictly Gaussian. A new measure of correlation and a measure of scale are proposed which are substantially more robust than their least squares counterparts. An illustration shows how increased robustness can be obtained through the use of equal regression weights without severe loss in accuracy. The paper also shows how incorporating knowledge about the theoretical structure of the regression coefficients into their estimation can aid substantially in increasing their robustness.