R Dataset / Package Stat2Data / TwinsLungs

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How To Compute the Mean

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How To Create a Plot

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How to Compute the Median

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<iframe src="https://embed.picostat.com/r-dataset-package-stat2data-twinslungs.html" frameBorder="0" width="100%" height="307px" />
Attachment Size
dataset-96542.csv 257 bytes
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0
Dataset Help

On this Picostat.com statistics page, you will find information about the TwinsLungs data set which pertains to TwinsLungs. The TwinsLungs data set is found in the Stat2Data R package. You can load the TwinsLungs data set in R by issuing the following command at the console data("TwinsLungs"). This will load the data into a variable called TwinsLungs. If R says the TwinsLungs 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 TwinsLungs R data set. The size of this file is about 257 bytes.

Documentation

TwinsLungs

Description

Comparing lung function for twins between rural and urban environments

Format

A dataset with 14 observations on the following 3 variables.

Pair Code for the twin pair: A - G
Environ Living environment: Rural or Urban
Percent Percentage of radioactivity remaining in lungs

Details

This dataset is from a study to compare the effect of living environment (rural or urban) on human lung function, where the researchers were able to locate seven pairs of twins with one twin in each pair living in the country, the other in a city. To measure lung function, twins inhaled an aerosol of radioactive Teflon particles. By measuring the level of radioactivity immediately and then again after an hour, the scientists could measure the rate of “tracheobronchial clearance." The percentage of radioactivity remaining in the lungs after an hour told how quickly subjects' lungs cleared the inhaled particles.

Source

“Urban factor and tracheobronchial clearance" by Per Camner and Klas Philipson in Archives of Environmental Health, V. 27 (1973), page 82. Data can be found in Introduction to Mathematical Statistics and its Applications, 2nd Edition by Richard J. Larson and Morris L. Marx. Englewood Cliffs, NJ: Prentice Hall, p. 548.

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

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