

\subsection{\bf Remarks on Counting Errors}
\subsection{\bf in Moments---III}

\begin{slide}
\begin{itemize}
\item There are $N_T$ total events and $N$ fall into bin $y_1 \le y \le
y_2$.

\item Now we can apply $F/G$ theorem from end of Section~2,

\item and it is not hard to show that $f$ and $g$ separately have
counting errors $\sqrt{N}$,

\item but they are correlated and correlation cancels counting errors,
so that $\alpha$ has identical error formula to standard moment
method.

\item (The estimate of $p(y)$ will involve counting error, of course).
\end{itemize}
\end{slide}

