Bartlett-corrected likelihood-ratio statistic
= Bartlett-corrected likelihood-ratio statistic
{c}
{title2=$W_B=W/(1+b/n)$}
If $\mathbb E_0W=d(1+b/n+O(n^{-2}))$, the Bartlett-corrected statistic has mean $d+O(n^{-2})$. It is commonly calibrated against a <chi-squared distribution> with $d$ degrees of freedom. Equivalently, to the displayed order, one may multiply $W$ by $1-b/n$.