Description Usage Format Source References
An experiment that investigated the cause of variability of the length of steel bars in a manufacturing process. (Chapter 7, Table 7.26)
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A data frame with 96 rows and 4 variables:
heat treatment - 2 levels
screw machine - 4 levels
time of day - 3 levels (8 am, 11 am, 3 pm)
(length - 4.38) x 100 inches
http://www.wright.edu/~dan.voss/bookdata/data.html
Dean, A. and Voss, D. (1999). Design and Analysis of Experiments. New York, Springer.
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