Hi Lawrence, thanks for the note, and glad to hear you are trying this at home!

To mildly disguise the original data and keep a clean look in the table, I divided the original data by a factor and am not showing the decimal places. That is why the squared values look a little off. (Looking back, I should have rounded everything to integers before squaring, and thus avoided creating this confusion.)

I understand that Steve Morlidge will soon be publishing some additional work on this topic. I'm looking forward to that, and will cover it here in the blog. Thanks,

--Mike