# R Dataset / Package MASS / geyser

Submitted by pmagunia on March 9, 2018 - 1:06 PM
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Documentation

## Old Faithful Geyser Data

### Description

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 were coded as 2, 3 or 4 minutes, having originally been described as ‘short’, ‘medium’ or ‘long’.

### Usage

geyser


### Format

A data frame with 299 observations on 2 variables.

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

### Note

The waiting time was incorrectly described as the time to the next eruption in the original files, and corrected for MASS version 7.3-30.

### 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.

faithful.

CRAN package sm.

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Dataset imported from https://www.r-project.org.