For one of my classes, I have a semester long group project that I have been working on. We chose a rather silly (but fun!) topic: Whether Double Stuf Oreos actually have double the stuf of regular ones.
We surveyed over 100 people on their thoughts, and then set about weighing out the "stuf". I weighed out a total off 66 cookies, and there was a wide variation (in hundredths of ounces) of the regular cookies, but the double stuf were almost spot on each time. We have not finished our data churning, but it looks to be that Double Stuf are basically double the stuf!