R Dataset / Package Stat2Data / LostLetter
On this R-data statistics page, you will find information about the LostLetter data set which pertains to LostLetter. The LostLetter data set is found in the Stat2Data R package. You can load the LostLetter data set in R by issuing the following command at the console data("LostLetter"). This will load the data into a variable called LostLetter. If R says the LostLetter data set is not found, you can try installing the package by issuing this command install.packages("Stat2Data") and then attempt to reload the data with the library() command. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the LostLetter R data set. The size of this file is about 5,572 bytes.
LostLetter
Description
Which "lost" letters will be returned by the public?
Format
A dataset with 140 observations on the following 8 variables.
Location | Where letter was "lost": DesMoines, GrinnellCampus, or GrinnellTown |
Address | Address on teh letter: Confederacy or Peaceworks |
Returned | 1=letter was returned or 0=letter was not returned |
DesMoines | Indicator for letters left in Des Moines |
GrinnellTown | Indicator for letters left in the town of Grinnell |
GrinellCampus | Indicator for letters left on the Grinnell campus |
Peaceworks | Indicator for letters addressed to Iowa Peaceworks |
Confederacy | Indicator for letters addressed to Friends of the Confederacy |
Details
In 1999 Grinnell College students Laurelin Muir and Adam Gratch conducted an experiment for an introductory statistics class. They intentionally "lost" 140 letters in either the city of Des Moines, the town of Grinnell, or on the Grinnell College campus. Half of each sample were addressed to Friends of the Confederacy and the other half to Iowa Peaceworks. The students kept track of which letters were eventually returned.
Source
Student project at Grinnell College
Dataset imported from https://www.r-project.org.
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