I dont work for EA and have no access to any of that information.
I also have a fair amount of experience in programming and it is extremely easy using a simple clock to help seed a RNG function that will have no pattern, except for following the bell curve to create the statistical mean you are looking for.
even the data you are showing i would say is not large enough to pull statistically accurate information from. most true data will take 100s of points to get to the mean, but this is not my program so i have no way of knowing what the true spread is.