This is a toy panel data set on charitable contributions across 10 years for 47 taxpayers. It's useful for illustrating the estimation of panel models.
Format
A data frame with 470 observations on the following 8 variables.
subjecta numeric identifier for the subject
timea numeric time identifier, as a simple integer from 1 to 10
charitythe sum of cash and other property contributions, excluding carry-overs from previous years
incomeadjusted gross income
price1 minus the marginal income tax rate, which is defined on income prior to contributions
agea dummy variable that equals 1 if the respondent is over 64, 0 otherwise
msa dummy variable that equals 1 if the respondent is married, 0 otherwise
depsthe number of claimed dependents, as an integer
Details
Frees (2003) is the nominal source for these data, as they appear as toy data sets for use in his book. He in turn cites Banerjee and Frees (1995), though this citation may have been meant for a 1997 article in Journal of the American Statistical Association. The actual source for these data as I obtained them is Gujarati (2012). The underlying source of the raw data are supposedly the 1979-1988 Statistics of Income Panel of Individual Tax Returns. Given the opacity of the data, and its temporal limitations, these data should only be used for illustration and not inference.
The charitable contributions variable and income variables are very clearly log-transformed. Banerjee and Price (1997) seem to imply the price variable is as well.