# plotnine.data.faithfuld¶

plotnine.data.faithfuld

Old Faithful Geyser Data

Description

Waiting time between eruptions and the duration of the eruption for the Old Faithful geyser in Yellowstone National Park, Wyoming, USA.

Format

A data frame with grid data for 272 observations on 2 variables and the density at those locations.

Column Description
eruptions Eruption time in mins
waiting Waiting time to next eruption (in mins)
density Density Estimate

Details

A closer look at faithful.eruptions reveals that these are heavily rounded times originally in seconds, where multiples of 5 are more frequent than expected under non-human measurement. For a better version of the eruption times, see the example below.

There are many versions of this dataset around: Azzalini and Bowman (1990) use a more complete version.

Source

1. Härdle.

References

Härdle, 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.