@subsubheading Description

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

@subsubheading Format

@table @code
@item Year
The year.
@item GNP_deflator
GNP implicit price deflator (1954=100).
@item GNP
Gross National Product.
@item Unemployed
Number of unemployed.
@item Armed_Forces
Number of people in the armed forces.
@item Population
“Noninstitutionalized” population ≥ 14 years of age.
@item Employed
Number of people employed.
@end table

@subsubheading Source

J. W. Longley (1967). An appraisal of least-squares programs from the point of
view of the user. @cite{Journal of the American Statistical Association}, 62,
819–841.

@subsubheading References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988). @cite{The New S
Language}. Monterey: Wadsworth & Brooks/Cole.

@subsubheading Examples

@example
@INCLUDE_DATASET_EXAMPLE_SCRIPT{longley_1.m}
@end example
