Project 58
Project description

Consider the pennies collected in this sample.

  1. Compute the sample mean of the mass of these pennies.
  2. Compute the sample standard deviation of the mass of these pennies.
  3. Compute the five-number summary of the mass of these pennies.

Background on the data set
This data set consists of the years and masses of 100 randomly selected pennies (from a piggy bank in Tacoma, Washington), the masses being measured to the hundredth of a gram. The measurements were made one evening during the summer of 2008 using a MyWeigh Durascale (50 g by 0.01 g capacity). The order of the pennies in the data set is the order in which their masses were measured (which was randomly determined). The two variables and their units are summarized in the following table.
Variables in the data set
The variables in the data set are as follows:
NameUnitsDescription
yearyearsyear in which the penny was minted
massgramsmass of the penny
Link to the data set
The full data set in csv format is at:
http://hoard.projectivespace.com/datasets/pennies.csv