Displaying 1 result from an estimated 1 matches for "treadwear".
Did you mean:
treadway
2010 Feb 15
1
Adjusted means and generalized chain block designs
...al designs can be useful in engineering
and other fields.
I am having difficulty obtaining his adjusted treatment means
in his example, shown below, by the use of lm(), or glm(), or ols().
However, I can obtain Mandel's analysis of variance.
# Mandel example, op. cit. page 263
# y are logs of treadwear, blocks are wheel positions,
# and rows are runs.
blocks = factor( rep(1:4, 4) ) # blocks
rows = factor(c( 1,1,1,1, 2,2,2,2, 3,3,3,3, 4,4,4,4) ) #pos
trt = factor( c(1:8, 7,8,2,1,3,4,6,5) ) # tires
y = c(1.802, 1.862, 1.173, 1.762,
1.935, 2.072, 1.703, 1.935,
1.610, 1....