Weak Law of Large Numbers

Chebychev's Inequality implies: For X a discrete or continuous rv with $\mu=E(X)$ and finite $Var(X)=\sigma^2$,

$$P(\left\vert \frac{S_n}{n} -\mu \right\vert \leq \epsilon) \longrightarrow_{n\rightarrow \infty} 0$$