ibm: IBM sales and profit

Description Usage Format Source Examples

Description

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

Usage

1

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

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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")

robjhyndman/fma documentation built on May 27, 2019, 11:40 a.m.