Description
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.
Format
This data frame contains the following columns:
- len
-
length of specimen (250, 300, 350 mm)
- amp
-
amplitude of loading cycle (8, 9, 10 min)
- load
-
load (40, 45, 50g)
- cycles
-
number of cycles until failure
Source
Box, G. E. P. and Cox, D. R. (1964). An analysis of transformations (with
discussion). J. Royal Statist. Soc., B26, 211-46.References
Fox, J. and Weisberg, S. (2011)
An R Companion to Applied Regression, Second Edition, Sage.
Weisberg, S. (2014) Applied Linear Regression, Fourth Edition, Wiley, Section 6.3.