\Header{savings}{Intercountry Life-Cycle Savings Data}
\keyword{datasets}{savings}
\begin{Usage}
\begin{verbatim}data(savings)\end{verbatim}
\end{Usage}
\begin{Format}
A data frame with 50 observations on 5 variables.
\Tabular{rlll}{
[,1]  & sr    & numeric  & aggregate personal savings\\{}
[,2]  & pop15 & numeric  & \% of population under 15\\{}
[,3]  & pop75 & numeric  & \% of population over 75\\{}
[,4]  & dpi   & numeric  & real per-capita disposable income\\{}
[,5]  & ddpi  & numeric  & \% growth rate of dpi\\{}
}\end{Format}
\begin{Description}
Under the life-cycle savings hypothesis as developed by Franco
Modigliani, the savings ratio (aggregate personal saving divided
by disposable income is explained by per-capita disposable income,
the percentage rate of change in per-capita disposable income, and
two demographic variables: the percentage of population less than
15 years old and the percentage of the population over 75 years
old.  The data are averaged over the decade 1960-1970 to remove
the business cycle or other short-term fluctuations.\end{Description}
\begin{Source}
The data were obtained from Belsley, Kuh and Welsch (1980).
They in turn obtained the data from Sterling (1977).\end{Source}
\begin{References}
Sterling, Arnie (1977). Unpublished BS Thesis.
Massachusetts Institute of Technology.

Belsley, D. A., E. Kuh and R. E. Welsch (1980).
Regression Diagnostics.  New York: Wiley.\end{References}

