Q:

What typographic support is available to support display of statistical formula?

There will be occasions when it would be useful to be able to include a statistical formula within a question, answer, or comment.  How is this supported?

A:

jsMath would be awesome as it could allow dynamic previewing of mathematics in questions and answers.
As a stopgap measure, you can use a service that compiles markup, such as TeX, to an image and then link the image into your Question or Answer.  Here's a list of some such services taken from a blog post by my good friend Cameron see his blog post for side-by-side comparisons.

Codecogs: Delivers GIF or PNG 
mathTeX: Delivers GIF or PNG
mimeTeX: An older version of mathTeX
Sitmo Equation Editor: Delivers PNG, possibly others
mathTran:  Delivers PNG, possibly others

It seems StackExchange scrubs image links that pass script parameters- which is unfortunate as these services can't be used directly from a post.  However, you can download the generated image and rehost using a site like TinyPic.

A:

Is it possible to incorporate the latex javascript library that mathoverflow use?

A:

Latex support is now built-in. See this meta thread from math.SE: https://math.meta.stackexchange.com/questions/2/tex-math-markup-is-sorely-needed
I have made this answer CW in case you want to see what you have to do to get latex output.
A demo: $\alpha$
John Gietzen over at http://math.stackexchange.com has created a greasemonkey script which uses the Google Charts API to create images on the fly from latex. I have asked his permission to adapt it for our site. See his answer to this question: https://math.meta.stackexchange.com/questions/2/tex-math-markup-is-sorely-needed
Here is a demo of the script: $\alpha$
Ok, here is the script put together by John: http://userscripts.org/scripts/show/81977
Presently, I have it working for in firefox with greasemonkey installed. Apparently, it works in Chrome as well but I have not been able to get it to work. I will update this answer if I can resolve that issue.
Perhaps, we should start using tex + the above script. The advantage is that as and when we get tex support from the devs all our posts will look nice.

