R Dataset / Package Stat2Data / Orings


On this R-data statistics page, you will find information about the Orings data set which pertains to Orings. The Orings data set is found in the Stat2Data R package. You can load the Orings data set in R by issuing the following command at the console data("Orings"). This will load the data into a variable called Orings. If R says the Orings data set is not found, you can try installing the package by issuing this command install.packages("Stat2Data") 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 Orings R data set. The size of this file is about 306 bytes.



Number of damaged O-rings on space shuttle launches and launch temperature


A dataset with 24 observations on the following 2 variables.

R project statistics dataset table
Temp Code for temperature (in degrees F): Above65 Below65
Failures Number of O-ring failures


The space shuttle Challenger explodes shortly after liftoff in 1987. The subsequent investigation focused on the failure of O-ring seals, which allowed liquid hydrogen and oxygen to mix and explode. These failures might be related to temperature at the launch site which was near freezing (32 degrees F) on that day. This dataset shows the number of O-ring failures on previous shuttle launches, along with an indicator for whether the temperature was above or below 65 degrees F.


Data can be found in "Risk analysis of the space shuttle: Pre-challenger prediction of failure" by Siddhartha R. Dalal, Edward B. Fowlke, and Bruce Hoadley in Journal of the American Statistical Association, Vol. 84, No. 408 (Dec. 1989), pp 945-957


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

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Attachment Size
dataset-42127.csv 306 bytes
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0

This documentation is licensed under GPLv3 or later.