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5 votes
2 answers
2k views

Statistical comparison of (covariance) matrices

I am trying to test whether the covariance matrix for the maximum likelihood estimates for a gaussian general linear model approaches the inverse Fisher information matrix (times 1/n , n being the ...
Meep's user avatar
  • 173
1 vote
1 answer
602 views

Different version of Wald test statistic formula

I came across two formulas for the Wald test statistic in a maximum likelihood framework: One has $(R\hat{\theta}-r)'(RI_n^{-1}R')^{-1}(R\hat{\theta}-r)$, where $I_n^{-1}$ is the inverse of the ...
Guest's user avatar
  • 11