VolcanoHeights: Tukey's Volcano Heights

In countreg: Count Data Regression

Tukey's Volcano Heights

Description

Heights of 218 volcanos taken from Tukey (1972).

Usage

data("VolcanoHeights")

Format

A numeric vector of 218 volcano heights (in 1000 feet).

Details

The data are taken from Tukey (1972) who obtained them from The World Almanac, 1966 (New York: The New York World-Telegram and The Sun, 1966), pp. 282–283.

Source

Figure 1 in Tukey (1972).

References

Tukey JW (1972). “Some Graphic and Semigraphic Displays.” In Bancroft TA (ed.), Statistical Papers in Honor of George W. Snedecor, pp. 293–316. Iowa State University Press, Ames, IA. Reprinted in Cleveland WS (ed.): The Collected Works of John W. Tukey, Volume V. Graphics: 1965–1985, Wadsworth & Brooks/Cole, Pacific Grove, CA, 1988.

Examples

## Rootograms from Tukey (1972)
## (some 'breaks' don't match exactly)
library("topmodels")
data("VolcanoHeights", package = "countreg")

## Figure 16
rootogram(lm(VolcanoHeights ~ 1), style = "standing",
  breaks = 0:20 - 0.01, expected = FALSE, confint = FALSE)

## Figure 17
rootogram(lm(sqrt(1000 * VolcanoHeights) ~ 1), style = "standing",
  breaks = 0:17 * 10 - 1.1, expected = FALSE, confint = FALSE)

## Figure 18
rootogram(lm(sqrt(1000 * VolcanoHeights) ~ 1), style = "hanging",
  breaks = -2:18 * 10 - 1.1, confint = FALSE)

## Figure 19
rootogram(lm(sqrt(1000 * VolcanoHeights) ~ 1), style = "suspended",
  breaks = -2:18 * 10 - 1.1, ylim = c(6, -2), confint = FALSE)
abline(h = c(-1.5, -1, 1, 1.5), lty = c(2, 3, 3, 2))

countreg documentation built on Dec. 4, 2023, 3:09 a.m.