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zeamays
2011 Oct 14
2
non-parametric permutation and signed paired-difference distributions
Hi all
Consider the classic data below from Darwin on the heights of 15 pairs
of zea mays (corn) plants
either cross-fertilized or self-fertilized, where the goal is to see if
it makes a difference.
> head(ZeaMays)
pair pot cross self diff
1 1 1 23.500 17.375 6.125
2 2 1 12.000 20.375 -8.375
3 3 1 21.000 20.000 1.000
4 4 2 22.000 20.000 2.000
5 5 2 19.125 18.375 0.750
6 6 2 21.500 18.625 2.875
...
I'd like to illustrate two types of non-parametric tests of whe...