Old Faithful Geyser Data

A version of the eruptions data from the ‘Old Faithful’ geyser in Yellowstone National Park, Wyoming. This version comes from Azzalini and Bowman (1990) and is of continuous measurement from August 1 to August 15, 1985.

Some nocturnal duration measurements have originally been described as ‘short’, ‘medium’ or ‘long’ and are given as interval censored observations in this version of the dataset.

Usage

geyser

Format

A data frame with 299 observations on 2 variables.

duration	Surv	Eruption time in mins
waiting	numeric	Waiting time for this eruption

Note

Variable duration was converted to a Surv object for representing interval censored nocturnal observations.

See also

faithful, geyser.

References

Azzalini, A. and Bowman, A. W. (1990) A look at some data on the Old Faithful geyser. Applied Statistics 39, 357–365.

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.