Penny Circulation Data Analysis
There have been a total of 1096 pennies analyzed for their dates. Four pennies were unreadable. There were 10 sets of 100 pennies each, 1 set of 200 pennies analyzed. The following conclusions can be drawn from the penny data:
MEDIAN: 1990
MODE: 2002 - 57 PENNIES
OLDEST: 1954
NEWEST: 2002
This chart shows that there is a lot of variety in the years of penny circulation, but that the newer pennies are found more frequently in circulation. As the pennies get older the number of those pennies in circulation declines. My 7th grade classes will try to come up with valid reasons for this decline in the fall.