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.
Source
The data were obtained from Belsley, Kuh and Welsch (1980).
They in turn obtained the data from Sterling (1977).
References
Sterling, Arnie (1977) Unpublished BS Thesis.
Massachusetts Institute of Technology.
Belsley, D. A., Kuh. E. and Welsch, R. E. (1980)
Regression Diagnostics.
New York: Wiley.
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> library(datasets)
> png(filename="/home/ddbj/snapshot/RGM3/R_rel/result/datasets/LifeCycleSavings.Rd_%03d_medium.png", width=480, height=480)
> ### Name: LifeCycleSavings
> ### Title: Intercountry Life-Cycle Savings Data
> ### Aliases: LifeCycleSavings
> ### Keywords: datasets
>
> ### ** Examples
>
> require(stats); require(graphics)
> pairs(LifeCycleSavings, panel = panel.smooth,
+ main = "LifeCycleSavings data")
> fm1 <- lm(sr ~ pop15 + pop75 + dpi + ddpi, data = LifeCycleSavings)
> summary(fm1)
Call:
lm(formula = sr ~ pop15 + pop75 + dpi + ddpi, data = LifeCycleSavings)
Residuals:
Min 1Q Median 3Q Max
-8.2422 -2.6857 -0.2488 2.4280 9.7509
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 28.5660865 7.3545161 3.884 0.000334 ***
pop15 -0.4611931 0.1446422 -3.189 0.002603 **
pop75 -1.6914977 1.0835989 -1.561 0.125530
dpi -0.0003369 0.0009311 -0.362 0.719173
ddpi 0.4096949 0.1961971 2.088 0.042471 *
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Residual standard error: 3.803 on 45 degrees of freedom
Multiple R-squared: 0.3385, Adjusted R-squared: 0.2797
F-statistic: 5.756 on 4 and 45 DF, p-value: 0.0007904
>
>
>
>
>
> dev.off()
null device
1
>