Experimental plot consisted of 75 sampling units with 40 tobacco plants in each one.



A data frame with 75 rows and 2 variables:

[, 1]iNumber of diseased plants (from 0 to 40).
[, 2]nSampling unit size. Here, n = 40 plants per sampling unit.


Madden LV, Pirone TP, Raccah B. 1987. Analysis of spatial patterns of virus-diseased tobacco plants. Phytopathology 77, 1409–1417.