freeny               package:datasets               R Documentation

Freeny's Revenue Data

Description:

     Freeny's data on quarterly revenue and explanatory variables.

Usage:

     freeny
     freeny.x
     freeny.y

Format:

     There are three 'freeny' data sets.

     'freeny.y' is a time series with 39 observations on quarterly
     revenue from (1962,2Q) to (1971,4Q).

     'freeny.x' is a matrix of explanatory variables.  The columns are
     'freeny.y' lagged 1 quarter, price index, income level, and market
     potential.

     Finally, 'freeny' is a data frame with variables 'y',
     'lag.quarterly.revenue', 'price.index', 'income.level', and
     'market.potential' obtained from the above two data objects.

Source:

     A. E. Freeny (1977) _A Portable Linear Regression Package with
     Test Programs_. Bell Laboratories memorandum.

References:

     Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) _The New S
     Language_. Wadsworth & Brooks/Cole.

Examples:

     require(stats); require(graphics)
     summary(freeny)
     pairs(freeny, main = "freeny data")
     # gives warning: freeny$y has class "ts"

     summary(fm1 <- lm(y ~ ., data = freeny))
     opar <- par(mfrow = c(2, 2), oma = c(0, 0, 1.1, 0),
                 mar = c(4.1, 4.1, 2.1, 1.1))
     plot(fm1)
     par(opar)

