longley

Longley's Economic Regression Data

A macroeconomic data set which provides a well-known example for a highly collinear regression.

Keywords
datasets
Usage
longley
Format

A data frame with 7 economical variables, observed yearly from 1947 to 1962 (\(n=16\)).

GNP.deflator

GNP implicit price deflator (\(1954=100\))

GNP

Gross National Product.

Unemployed

number of unemployed.

Armed.Forces

number of people in the armed forces.

Population

‘noninstitutionalized’ population \(\ge\) 14 years of age.

Year

the year (time).

Employed

number of people employed.

The regression lm(Employed ~ .) is known to be highly collinear.

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

Aliases
  • longley
Examples
library(datasets) # NOT RUN { require(stats); require(graphics) ## give the data set in the form it is used in S-PLUS: longley.x <- data.matrix(longley[, 1:6]) longley.y <- longley[, "Employed"] pairs(longley, main = "longley data") summary(fm1 <- lm(Employed ~ ., data = longley)) opar <- par(mfrow = c(2, 2), oma = c(0, 0, 1.1, 0), mar = c(4.1, 4.1, 2.1, 1.1)) plot(fm1) par(opar) # }
Documentation reproduced from package datasets, version 3.4.3, License: Part of R 3.4.3

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