standard deviation???

[MYKE]

if you use the 'TJ9991' timer (phppuzzletimer), if you go on "stats" it has you times on a table and below it a "standard deviation" line.

what is standard deviation?

btw my name is MYKE GREGORY if you want to check out my stats.
MYKE...

 

[tim]

wikipedia knows the answer

 

[pjk]

It is basically the average of the differences among your times