Longley's Regression Data

Usage

data(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 Producr.
Unemployed: number of unemployed
Armed.Forces: number of .. in the armed forces
Population: `noninstitutionalized' population
>= 14 years of age.
Year: the year (time).
Employed: number of people employed.

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

Source

J. W. Longley (1967). An appraisal of least-squares programs from the point of view of the user. Journal of the American Statistical Association 62, 819𤴹.

Examples

# give the data set in the form it is used in S-plus:
data(longley)
longley.x <- data.matrix(longley[, 1:6])
longley.y <- longley[, "Employed"]

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