Incidence data from the Dogwood Anthracnose Impact Assessment Program for 1990 and 1991, in the Southeast of the USA, reported by Zarnoch et al (1995). Only plots with exactly n = 10 dogwood trees are present in the data set (168 and 161 plots in 1990 and 1991, respectively).
dogwood_anthracnose
A data frame with 329 rows and 3 variables:
| [, 1] | t | Year of disease assessments (1990 or 1991).. |
| [, 2] | i | Number of diseased plants (from 0 to 10). |
| [, 3] | n | Sampling unit size. Here, n = 10 plants per sampling unit (or plot). |
Zarnoch SJ, Anderson RL, Sheffield RM. 1995. Using the \(\beta\)-binomial distribution to characterize forest health. Canadian journal of forest research 25, 462–469.