| penny_ages {openintro} | R Documentation | 
Penny Ages
Description
Sample of pennies and their ages. Taken in 2004.
Usage
penny_ages
Format
A data frame with 648 observations on the following 2 variables.
- year
- Penny's year. 
- age
- Age as of 2004. 
Examples
hist(penny_ages$year)
[Package openintro version 2.5.0 Index]