This dataset was taken from the list of OpenIntro dataset files found at https://www.openintro.org/data/.
OpenIntro features a number of free books that can be used in high school and AP statistics courses. The license on these datasets is currently unknown. You can find out more about OpenIntro at https://www.openintro.org.
This study investigated whether finding a coin influenced a person'slikelihood of mailing a sealed but addressed letter that appeared to havebeen accidentally left in a conspicuous place. Several variables werecollected during the experiment, including two randomized variables ofwhether there was a coin to be found and whether the letter already had astamp on it.
- stamped - a factor with levels no yes
- found_coin - a factor with levels coin no_coin
- gender - a factor with levels female male
- mailed_letter - a factor with levels no yes
Levin PF, Isen AM. 1975. Studies on the Effect of Feeling Good onHelping. Sociometry 31(1), p141-147.
The precise context was in a phone booth (this study is from the 1970s!),where a person who entered a phone booth would find a dime in the phonetray, which would be sufficient to pay for their phone call. There was alsoa letter next to the phone, which sometimes had a stamp on it.
Taken from: https://www.openintro.org/data/index.php?data=mail_me.