ibm {fma} | R Documentation |
IBM sales and profit (1954-1984) and forecasts.
ibm
Time series data
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") lines(ibm[,4],col=2,type="o")