In accordance with our policy: What is our policy on merging duplicate questions?, that is, we are supposed to post meta suggestions for merges of questions/answers and take votes on them.
I propose to merge Explain Cohen's kappa in a simplest way? with the Cohen's kappa in plain English. It is closed as a duplicate question, but it would make sense to move existing answers as well.
Vote for your choices below.
Update: My own answer is moved by me, which brings up other questions, who should move what when and how does our policy, which has wasted our time contribute to this? However, there is still one more answer left there.