<p><img src="https://i.stack.imgur.com/4OseL.gif" alt="the mean square" />
<a href="http://chat.stackexchange.com/transcript/message/2238328#2238328">The Mean Square</a><br/> (with one standard deviation and several unusual ones)</p>
<p>aka Rob Johnson</p>
<p><a href="http://meta.math.stackexchange.com/questions/1088/should-chat-have-tex-support/3297#3297"><span class="math-container">$\LaTeX$</span> support for Chat</a></p>
<p><a href="http://tinyurl.com/cfqcvpc" rel="nofollow noreferrer">ChatJax installer</a></p>
<p><a href="https://flic.kr/s/aHsjvp7nW7" rel="nofollow noreferrer">Some of my astrophotos</a></p>

robjohn