The SCF dataset is a comprehensive survey of consumer finances
sponsored by the United States Federal Reserve,
http://www.federalreserve.gov/pubs/oss/oss2/2001/scf2001home.html.
The data is oversampled to compensate for low response in the upper
brackets. To compensate, weights are assigned. By bootstrapping the
data with the weights, we get a “better” version of a random sample
from the population.