ibm {fma}R Documentation

IBM sales and profit

Description

IBM sales and profit (1954-1984) and forecasts.

Usage

ibm

Format

Time series data

Sales
IBM annual sales
Profit
IBM annual profit
FSales
Forecast of IBM sales made in 1984
FProfit
Forecast of IBM profits made in 1984

Source

Makridakis, Wheelwright and Hyndman (1998) Forecasting: methods and applications, John Wiley & Sons: New York. Chapter 9.

Examples

par(mfrow=c(2,1))
plot(ibm[,1],xlim=c(1954,2000),ylim=c(0,200),
    ylab="Sales (billions of $)",xlab="Year",type="o")
lines(ibm[,3],col=2,type="o")
plot(ibm[,2],xlim=c(1954,2000),ylim=c(-10,30),
    ylab="Profits (billions of $)",xlab="Year",type="o")
lines(ibm[,4],col=2,type="o")

[Package fma version 1.23 Index]