wool


This is a three-factor experiment with each factor at three levels, for
a total of 27 runs.  Samples of worsted yarn were with different levels of
the three factors were given a cyclic load until the sample failed.  The
goal is to understand how cycles to failure depends on the factors.


datasets

This package is a companion to the textbook S. Weisberg (2005),
"Applied Linear Regression," 3rd edition, Wiley. It includes all the
data sets discussed in the book (except one), and a few functions that
are tailored to the methods discussed in the book.  As of version 2.0.0,
this package depends on the car package. Many functions formerly
in alr3 have been renamed and now reside in car.
Data files have beeen lightly modified to make some data columns row labels.

Sanford Weisberg

alr3

Data to accompany Applied Linear Regression 3rd edition

wool function

This data frame contains the following columns:
 <dl>
    <dt>Len</dt><dd>
 length of specimen (250, 300, 350 mm)
    </dd> <dt>Amp</dt><dd>
 amplitude of loading cycle (8, 9, 10 min)
    </dd> <dt>Load</dt><dd>
 load (40, 45, 50g)
    </dd> <dt>Cycles</dt><dd>
 number of cycles until failure
    </dd> </dl> 

Format

Box, G. E. P. and Cox, D. R. (1964).  An analysis of transformations (with
discussion).  <em>J. Royal Statist. Soc.</em>, B26, 211-46.

wool: Wool data

Description

Arguments

Format

Source

References

Examples