<p>I think the revised question should be acceptable on the main site.</p>
<p>I recognize @NickCox's point that there isn't much to say in answer beyond what &quot;a simple reading suggests&quot;.  Since the OP is not a native English speaker, the issue might simply be help with a &quot;simple reading&quot;, and thus belong best on ELL.  Nonetheless, there are statistical concepts at the center of the passage that need to be understood, and explaining them seems to me to be the bulk of answering this Q.  In general, my test for whether a Q is on topic is 'what does the OP need explained?', and if it's a statistical concept, then I think the Q should be considered on topic.  What constitutes a &quot;simple reading&quot; to a person who is statistically savvy may not be what constitutes a &quot;simple reading&quot; to a person who is not.  In addition, I think that when there is a Q that may be on topic on multiple sites, we should generally defer to the OP's preference regarding which site it is to be posted.</p>
