R Dataset / Package MASS / anorexia

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How to Compute the Median

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<iframe src="https://embed.picostat.com/r-dataset-package-mass-anorexia.html" frameBorder="0" width="100%" height="307px" />
Attachment Size
dataset-40981.csv 1.14 KB
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 anorexia data set which pertains to Anorexia Data on Weight Change. The anorexia data set is found in the MASS R package. You can load the anorexia data set in R by issuing the following command at the console data("anorexia"). This will load the data into a variable called anorexia. If R says the anorexia 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 anorexia R data set. The size of this file is about 1,168 bytes.

Documentation

Anorexia Data on Weight Change

Description

The anorexia data frame has 72 rows and 3 columns. Weight change data for young female anorexia patients.

Usage

anorexia

Format

This data frame contains the following columns:

Treat

Factor of three levels: "Cont" (control), "CBT" (Cognitive Behavioural treatment) and "FT" (family treatment).

Prewt

Weight of patient before study period, in lbs.

Postwt

Weight of patient after study period, in lbs.

Source

Hand, D. J., Daly, F., McConway, K., Lunn, D. and Ostrowski, E. eds (1993) A Handbook of Small Data Sets. Chapman & Hall, Data set 285 (p. 229)

(Note that the original source mistakenly says that weights are in kg.)

References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

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

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