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Mildew data
The data refer to study of mildew control sponsored by Bainbridge,
Jenkyn and Dyke at Rothamsted Experimental Station. There were four
treatments, one of which was a control. There were 36 adjacent plots,
with an extra plot at each end. Nine blocks were created by grouping
the plots in fours.
The variables are:
t1, t2, t3: indicators of the four treatment groups
p1, ..., p8: indicators of the nine blocks
Yield: tons of grain per hectare
Source: Draper & Guttman (1980). Incorporating overlap effects from
neighbouring units into response surface models.
Applied Statistics 29, 128-134.
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