faithful {base}R Documentation

Old Faithful Geyser Data

Description

The `faithful' data frame has 272 rows and 2 columns; the waiting time between eruptions and the duration of the eruption for the Old Faithful geyser in Yellowstone National Park, Wyoming, USA.

Usage

data(faithful)

Format

A data frame with 272 observations on 2 variables.
[,1] eruptions numeric Eruption time in mins
[,2] waiting numeric Waiting time to next eruption

Source

W. Hardle.

References

Hardle, W. (1991). Smoothing Techniques with Implementation in S. New York: Springer

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

Examples

data(faithful)
plot(faithful, main = "faithful data: Eruptions of Old Faithful",
     xlab = "Eruption time (min)",
     ylab = "Waiting time to next eruption (min)")
lines(lowess(faithful$eruptions, faithful$waiting, f = 2/3, iter = 3),
      col = "red")


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