You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
defined in page 36 in text is distributed as $$ q \mid \mathbf{X} \sim \chi^2 (n - K)$$. So $$ \mathrm{Var} ( q \mid \mathbf{X} ) = 2(n - K) $$, and substituting into (1)
$$
\mathrm{Var} ( s^2 \mid \mathbf{X} ) =
\frac{ 2 \sigma^4 }{ n - K }.
$$