Description Usage Format Examples
Sample of pennies and their ages. Taken in 2004.
| 1 | data("penny.ages")
 | 
A data frame with 648 observations on the following 2 variables.
YearPenny's year.
ageAge as of 2004.
| 1 2 | data(penny.ages)
hist(penny.ages$Year)
 | 
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