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Canonical dataset for agreement for multiple observers described in Landis and Koch (Biometrics 1977; 33: 363-374).
data("landis")
The format is: int [1:118, 1:7] 4 1 3 4 3 2 1 3 2 1 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:118] "1" "2" "3" "4" ... ..$ : chr [1:7] "A" "B" "C" "D" ...
data(landis) ## maybe str(landis) ; plot(landis) ...
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