17.06 for a 5x5 11 team roto
for those that are still wondering about standard deviation....
http://en.wikipedia.org/wiki/Standard_deviation
basically its some heavy math to tell you how much variation there is between the numbers... like others said the more competitve the league the lower the number....
lets do an example of a 3 team league with 5x5 scoring
for each category there are 6 points 3 + 2 + 1 = 6
and we have 10 total categories giving us total pts of 60 for 3 players
now lets say the points break up like this where for some reason every team has the same amount of points
20
20
20
if we use excel =stdev(range of numbers20-20) we get zero and a very competitive league
if our league looked like this
30
20
10
and use excel the same way we get a stdev of 10 and while competitive its not as competitve as if it had a lower stdev
of course the more players you have the higher you can expect your stddev
and im not much of a math wiz but this is kinda my take on things someone please correct me if im wrong and i will edit this because i wouldnt want to spread bad info....