IBM sales and profit (1954-1984) and forecasts.
ibm
Time series data
IBM annual sales
IBM annual profit
Forecast of IBM sales made in 1984
Forecast of IBM profits made in 1984
Makridakis, Wheelwright and Hyndman (1998) Forecasting: methods and applications, John Wiley & Sons: New York. Chapter 9.
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")