USConsump1950 {AER} | R Documentation

## US Consumption Data (1940–1950)

### Description

Time series data on US income and consumption expenditure, 1940–1950.

### Usage

    data("USConsump1950")

### Format

An annual multiple time series from 1940 to 1950 with 3 variables.

income

  Disposable income.

expenditure

  Consumption expenditure.

war

  Indicator variable: Was the year a year of war?

### Source

Online complements to Greene (2003). Table F2.1.

http://pages.stern.nyu.edu/~wgreene/Text/tables/tablelist5.htm

### References

Greene, W.H. (2003). Econometric Analysis, 5th edition. Upper Saddle River, NJ: Prentice Hall.

### See Also

`Greene2003`, `USConsump1979`, `USConsump1993`

### Examples

    ## Greene (2003)
    ## data
    data("USConsump1950")
    usc <- as.data.frame(USConsump1950)
    usc$war <- factor(usc$war, labels = c("no", "yes"))

    ## Example 2.1
    plot(expenditure ~ income, data = usc, type = "n", xlim = c(225, 375), ylim = c(225, 350))
    with(usc, text(income, expenditure, time(USConsump1950)))

    ## single model
    fm <- lm(expenditure ~ income, data = usc)
    summary(fm)

    ## different intercepts for war yes/no
    fm2 <- lm(expenditure ~ income + war, data = usc)
    summary(fm2)

    ## compare
    anova(fm, fm2)

    ## visualize
    abline(fm, lty = 3)
    abline(coef(fm2)[1:2])
    abline(sum(coef(fm2)[c(1, 3)]), coef(fm2)[2], lty = 2)

    ## Example 3.2
    summary(fm)$r.squared
    summary(lm(expenditure ~ income, data = usc, subset = war == "no"))$r.squared
    summary(fm2)$r.squared

[Package AER version 1.2-5 Index]