The (approximately) quarterly approval rating for the President of the United States from the first quarter of 1945 to the last quarter of 1974.
A time series of 114 values.
Details
The data are actually a fudged version of the approval ratings. See McNeil's book for details.
Source
The Gallup Organisation.
References
McNeil, D. R. (1977) Interactive Data Analysis. New York: Wiley.
Use the following R code to directly access this dataset in R.