So yeah, I'm pretty amazed that Jeff's guess was so super close! I was more than a little surprised to see that we had SO many quarters, too. I suppose there's a way to figure out if these ratios are representative of the coin population (as it were) in general.
At a Family Conference about a year ago, we all agreed to use the coin jar to fund future family vacations, so that's $437.92 toward our next excursion (likely in the spring). We also have an envelope for bills we find laying around the house that goes toward the vacation fund, too. I'll take an equivalent amount of cash and put it in the envelope so we are all balanced out in that account.
The kids had a GRAND time feeding the Coinstar machine and it was a fun homeschool project, too. Sure, possibly a more valuable homeschool project might have been to
Thanks for playing, everyone! I guess we'll do this again in about a year--only next time I expect LOTS and LOTS of really close guesses if Jeff chooses to share his secret. And if he decides to keep his secret and become a professional coin-guesser, then I'll just be happy to take a cut, since without me he probably never would have taken the time to figure this out, right?
Don't worry, Jeff, my fee is less than Coinstar's. :D