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
1st August to 15th August 1985.
Some nocturnal duration measurements were coded as 2, 3 or 4 minutes,
having originally been described as ‘short’, ‘medium’ or ‘long’.
Usage
data(geyser)
Format
A data frame with 299 observations on 2 variables.
duration
numeric
Eruption time, in minutes
waiting
numeric
Waiting time before the eruption,
in minutes
Note that in versions of the sm package before 2.2-5 the waiting variable was incorrectly described as ‘waiting time to next eruption’.
References
Azzalini, A. and Bowman, A. W. (1990) A look at some
data on the Old Faithful geyser. Applied Statistics39, 357–365.