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单词 Anscombe residual
释义
Anscombe residual

Statistics
  • An alternative to the usual residual (see regression diagnostics) which Anscombe proposed in 1953 for cases where the random errors in a general regression model do not have a normal distribution. The idea is to produce quantities that do have near-normal distributions, and the form for the residual depends upon the error distribution assumed.

    In the case of a Poisson distribution, an Anscombe residual is given byAnscombe residualwhere y and ŷ are, respectively, observed and fitted values. In the case of a gamma distribution the formula becomesAnscombe residualand in the case of an inverse normal distribution the formula isAnscombe residual


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