Let $X_1, X_2, X_3, \ldots \in \text{Random}(\mathbb{R})$ each be a D3161: Random real number such that
(i) | $X_1, X_2, X_3, \ldots$ is an D3358: I.I.D. random collection |
(ii) | \begin{equation} \mathbb{E} |X_1|^4 < \infty \end{equation} |
(iii) | \begin{equation} \mu : = \mathbb{E} X_1 \end{equation} |
Then
\begin{equation}
\sum_{n = 1}^N \frac{X_n - \mu}{N}
\overset{a.s.}{\longrightarrow} 0
\quad \text{ as } \quad
N \to \infty
\end{equation}