R Dataset / Package MASS / Traffic
On this Picostat.com statistics page, you will find information about the Traffic data set which pertains to Effect of Swedish Speed Limits on Accidents. The Traffic data set is found in the MASS R package. Try to load the Traffic data set in R by issuing the following command at the console data("Traffic"). This may load the data into a variable called Traffic. If R says the Traffic 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 with library("MASS") followed by data("Traffic"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing Traffic at the command-line which should display the entire dataset.
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 Traffic R data set. The size of this file is about 3,009 bytes.
Effect of Swedish Speed Limits on Accidents
An experiment was performed in Sweden in 1961–2 to assess the
effect of a speed limit on the motorway accident rate. The
experiment was conducted on 92 days in each year, matched so that
This data frame contains the following columns:
Svensson, A. (1981) On the goodness-of-fit test for the multiplicative Poisson model. Annals of Statistics, 9, 697–704.
Venables, W. N. and Ripley, B. D. (1999) Modern Applied Statistics with S-PLUS. Third Edition. Springer.
Dataset imported from https://www.r-project.org.
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