I have a very simple data set consisting of three columns: Ground Truth Canopy Class, Method 1 Canopy Class and Method 2 Canopy Class. Each row in the columns represents the canopy class (i.e. 1 ...
The Kappa ($\kappa$) statistic was introduced in 1960 by Cohen  to measure agreement between two raters. Its variance, however, had been a source of contradictions for quite a some time. My ...