A little late about this, but bookmark this one for next year!
Last year, I posted the Twelve Days of Algebra, which I got from ICTM several years ago. But my Stats students were a little hurt when I had to sing them the 12 Days of Algebra in Stats. So we fixed that right up.
My awesome resident took lyrics that some former students had worked on and refined them and now we have:
Behold, happy 10th day of Stats class!
[Lyrics by Miranda De Young, 2013]