| longley(base) | R Documentation |
data(longley)
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 |
| >= 14 years of age. | |
| Year: | the year (time). |
| Employed: | number of people employed. |
The regression lm(Employed ~ .) is known to be highly
collinear.
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𤴹.
# 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"]