longley
Longley's Regression Data

### Description

The longley.x and longley.y data sets contain regression data from a study by J.W. Longley. The regression is known to be highly collinear.

### Arguments

longley.x | matrix with 6 columns giving the GNP implicit price deflator (where 1954=100), the GNP, the number of unemployed people, the number of people in the armed forces, the noninstitutionalized population 14 years of age and older, and the year.
longley.y | number of people employed annually, from 1947 to 1962.
longley | a data frame made from the longley.x matrix and the longley.y vector.

Source
Longley, J.W. (1967). An appraisal of least-squares programs from the point of view of the user. Journal of the American Statistical Association 62: 819--841. Republished by permission of the American Statistical Association.
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