Updated average coin age
Earlier (June 30th, 2008), I created a post about the average age of coin. In my initial hypothesis, I felt that quarters would have the oldest average age since they were more coveted, and pennies would have the youngest average age, since they are most likely to be thrown out or forgotten about. In that original post I had a sample size of only 69 coins. Currently I have 155 coins. Lets see how the average age has changed over this time.
Quarters
Time 1: 17 coins, average mint date of 1995.18
Time 2: 46 coins, average mint date of 1995.70
Dime
Time 1: 18 coins, average mint date of 1994.39
Time 2: 27 coins, average mint date of 1994.33
Nickel
Time 1: 9 coins, average mint date of 1987.11
Time 2: 18 coins, average mint date of 1991.44
Penny
Time 1: 25 coins, average mint date of 1992.96
Time 2: 64 coins, average mint date of 1993.39
From this data it appears that all coin denominations are either staying relatively consistent, or increasing somewhat. Maybe once my sample size becomes large enough, it will start to resemble more of my hypothesis.
The average value of each coin is 10.2 cents. The year with the most coins is 2007 with 16 of the 155 (10.3%). I am sure that this data is somewhat boring to most people, but I find it fairly interesting. Maybe a number cruncher can come up with a little more interesting data than I did.
Tags: age, coin count