Longley dataset#

Description#

The Longley dataset contains various US macroeconomic variables that are known to be highly collinear. It has been used to appraise the accuracy of least squares routines.

Notes#

Number of Observations - 16

Number of Variables - 6

Variable name definitions::

        TOTEMP - Total Employment
        GNPDEFL - GNP deflator
        GNP - GNP
        UNEMP - Number of unemployed
        ARMED - Size of armed forces
        POP - Population
        YEAR - Year (1947 - 1962)

Source#

The classic 1967 Longley Data

http://www.itl.nist.gov/div898/strd/lls/data/Longley.shtml

Longley, J.W. (1967) "An Appraisal of Least Squares Programs for the
    Electronic Comptuer from the Point of View of the User."  Journal of
    the American Statistical Association.  62.319, 819-41.