| longley {base} | R Documentation |
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 |
\ge 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, 819–841.
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"]