R Dataset / Package boot / frets

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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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Attachment Size
dataset-68053.csv 420 bytes
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0
R Dataset Help

On this Picostat.com statistics page, you will find information about the frets data set which pertains to Head Dimensions in Brothers. The frets data set is found in the boot R package. You can load the frets data set in R by issuing the following command at the console data("frets"). This will load the data into a variable called frets. If R says the frets data set is not found, you can try installing the package by issuing this command install.packages("boot") 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 frets R data set. The size of this file is about 420 bytes.

Documentation

Head Dimensions in Brothers

Description

The frets data frame has 25 rows and 4 columns.

The data consist of measurements of the length and breadth of the heads of pairs of adult brothers in 25 randomly sampled families. All measurements are expressed in millimetres.

Usage

frets

Format

This data frame contains the following columns:

l1

The head length of the eldest son.

b1

The head breadth of the eldest son.

l2

The head length of the second son.

b2

The head breadth of the second son.

Source

The data were obtained from

Frets, G.P. (1921) Heredity of head form in man. Genetica, 3, 193.

References

Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.

Whittaker, J. (1990) Graphical Models in Applied Multivariate Statistics. John Wiley.

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

All Public Datasets File Size
Test 394 bytes
Q1 332 bytes
prova_Correlatio 593 bytes
profva
test 332 bytes