Longley's Economic Regression Data

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

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 ≥ 14 years of age.
- Year: the year (time).
- Employed: number of people employed.

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, 819–841.

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