What is standard deviation
Join Date: Oct 2006
Posts: 2,065
I've seen it on these forums and have no clue what it is. I've found it on my pt and still don't know what it is. Any help.
Join Date: Jul 2006
Posts: 16,471
Join Date: Jul 2005
Posts: 18,841
The short answer is that SD measures how erratic your results are. The long answer is in the link above.