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Record 1 1997-10-24

English

Subject field(s)
  • Statistical Surveys
DEF

The error matrix, also called the covariance matrix, is the inverse of the second derivative matrix of the (log-likelihood or chisquare) function with respect to its free parameters, usually assumed to be evaluated at the best parameter values (the function minimum). The diagonal elements of the error matrix are the squares of the individual parameter errors, including the effects of correlations with the other parameters.

French

Domaine(s)
  • Sondages et enquêtes (Statistique)

Spanish

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