Exercise: observer agreement about 6eye colour, answer 6

Question

What weights for agreement would correspond to these disagreement weights?

Suggested answer

These would be the corresponding weights for agreement, with exact agreement given weight 1:

agree
    black     brown       blue         grey         hazel   green     other  
black     1 0.5 0 0 0 0 0
brown 0.5 1 0 0 0.5 0 0
blue 0 0 1 0.5 0 0 0
grey 0 0 0.5 1 0 0.5 0
hazel 0 0.5 2 0 1 0.5 0
green 0 0 2 0.5 0.5 1 0
other 0 0 2 0 0 0 1

We got these as follows. The maximum disagreement weight is 2. We subtracted the weights from 2. We then divided by 2, to give us the agreement weights.


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