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Description:

Experiment comparing twins (one urban, one rural) ability to clear airborne radioactive particles from their lungs

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A dataset with 14 observations on the following 4 variables.

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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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