The "DF" stands for douglas fir . It's the type of wood the plywood is made out of.
Douglas Fir Plywood for sheathing, or covering flooring or a roof.
The answer depends on the degrees of freedom (df). If the df > 1 then the mean is 0, and the standard deviation, for df > 2, is sqrt[df/(df - 2)].
df
OMG, oh my gosh or god TTYL, talk to you later DF, definetly
DragonFable
f dx ?? do you mean f df ? int(f df) (1/2)f2 + C --------------
DF in the medical feel can stand for dermal fibroblasts, delayed feeding, and deficiency factor to name a few.
df df df
it spell daeing freak
Df
ddd
any/any/any df df df