R Dataset / Package Stat2Data / LostLetter

Documentation

On this Picostat.com 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. 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

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Dataset imported from https://www.r-project.org.

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Attachment Size
dataset-64626.csv 5.44 KB
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0