freeny {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)

[Package datasets version 2.8.1 Index]