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jmanatVT

Joined: 1/17/08 Posts: 5679
Likes: 1243


I could understand aiming for a number of randomized tests


which gives you whatever the necessary sample size is to make useful projections about the entire population. However, as soon as that sample is not randomized it doesn't tell you much about the total population (because of the selection bias you mentioned). As discussed last week, that's probably what these charts tell us more than anything, the selection parameters have changed over the past month as it takes less "evidence" to get a test.

I could also understand this being a testing capacity thing whether it's to deal with a backlog or to be prepared if things get worse.

(In response to this post by PhotoHokieNC)

Posted: 05/18/2020 at 10:27AM



+1

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Current Thread:
 
  
I have a problem with this excerpt from local news - -- PhotoHokieNC 05/18/2020 10:14AM
  I gotta lotta problems with you people ** -- bigbadbird 05/18/2020 12:19PM
  Is that graph for NC? -- LaneRat 05/18/2020 11:34AM
  It's for Mecklenburg County/Charlotte only. ** -- PhotoHokieNC 05/18/2020 12:01PM
  Are you sure? It looks the same as NC's chart -- HokieBoy 05/18/2020 12:38PM
  I copied it off the Meck site ** -- PhotoHokieNC 05/18/2020 12:46PM
  I live in Meck Co. -- HokieBoy 05/18/2020 11:42AM
  Yep and not sure... -- HokieBoy 05/18/2020 12:34PM
  No idea. -- HokieBoy 05/18/2020 2:44PM

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