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### $Id: Orange.R,v 1.1 2003/12/11 07:16:04 ripley Exp $
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### $Id: Orange.R,v 1.1 2003/12/11 07:16:04 ripley Exp $
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### Growth of orange trees
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### Growth of orange trees
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### Draper and Smith (1981), Exercise 10.N, p. 524.
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### Draper and Smith (1981), Exercise 10.N, p. 524.
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"Orange" <-
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"Orange" <-
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  structure(list
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  structure(list
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  (Tree = structure(ordered(c(2, 2, 2, 2, 2, 2, 2,
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  (Tree = ordered(c(2, 2, 2, 2, 2, 2, 2,
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     4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 5, 5, 5, 5, 5, 5, 5,
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     4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 5, 5, 5, 5, 5, 5, 5,
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     3, 3, 3, 3, 3, 3, 3), levels=1:5),
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     3, 3, 3, 3, 3, 3, 3), levels=1:5,
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     class = c("ordered", "factor"),
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     .Label = c("3", "1", "5", "2", "4")),
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     labels = c("3", "1", "5", "2", "4")),
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   age = c(118, 484, 664,
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   age = c(118, 484, 664,
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     1004, 1231, 1372, 1582, 118, 484, 664, 1004, 1231, 1372, 1582,
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     1004, 1231, 1372, 1582, 118, 484, 664, 1004, 1231, 1372, 1582,
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     118, 484, 664, 1004, 1231, 1372, 1582, 118, 484, 664, 1004, 1231,
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     118, 484, 664, 1004, 1231, 1372, 1582, 118, 484, 664, 1004, 1231,
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     1372, 1582, 118, 484, 664, 1004, 1231, 1372, 1582),
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     1372, 1582, 118, 484, 664, 1004, 1231, 1372, 1582),
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   circumference = c(30,
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   circumference = c(30,