R Dataset / Package MASS / geyser


On this R-data statistics page, you will find information about the geyser data set which pertains to Old Faithful Geyser Data. The geyser data set is found in the MASS R package. You can load the geyser data set in R by issuing the following command at the console data("geyser"). This will load the data into a variable called geyser. If R says the geyser data set is not found, you can try installing the package by issuing this command install.packages("MASS") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the geyser R data set. The size of this file is about 2,899 bytes.

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




A data frame with 299 observations on 2 variables.

R project statistics dataset table
duration numeric Eruption time in mins
waiting numeric Waiting time for this eruption


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.


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.

See Also


CRAN package sm.


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

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Attachment Size
dataset-24781.csv 2.83 KB
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0

This documentation is licensed under GPLv3 or later.