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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.

Usage

charitable_contributions

Format

A data frame with 470 observations on the following 8 variables.

subject

a numeric identifier for the subject

time

a numeric time identifier, as a simple integer from 1 to 10

charity

the sum of cash and other property contributions, excluding carry-overs from previous years

income

adjusted gross income

price

1 minus the marginal income tax rate, which is defined on income prior to contributions

age

a dummy variable that equals 1 if the respondent is over 64, 0 otherwise

ms

a dummy variable that equals 1 if the respondent is married, 0 otherwise

deps

the 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.