Quadratic-weighted Cohen's kappa on the full scale.
A level value is its index. Unobserved levels stay in the scale, so 0 and 2
are not pulled together just because 1 was not used.
categoryCount is the scale length. When omitted, the scale runs through the highest level.
Quadratic-weighted Cohen's kappa on the full scale. A level value is its index. Unobserved levels stay in the scale, so 0 and 2 are not pulled together just because 1 was not used.
categoryCountis the scale length. When omitted, the scale runs through the highest level.