# This is where I make the most of my Hello World post!

## MathJax playground.

Some general probability or statistics notation: . Then, the parameterized distributions with `\begin{align}`

:

$$ \begin{align} p(x) &= \mathcal{N}(x \mid \mu, \sigma^2) \nonumber \\ &\propto f(x) \tag{1}\label{Einstein}. \\ \end{align} $$

## Interative data playground.

Click and drag one of the circles in the figure below!

Now, here is a link to equation \eqref{Einstein}.