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| IL-2 Sturmovik The famous combat flight simulator. |
| View Poll Results: do you know flugwerk company a her real one fockewulf a8? | |||
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2 | 33.33% |
| no |
  
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4 | 66.67% |
| Voters: 6. You may not vote on this poll | |||
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#11
11-29-2012, 02:26 AM
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Based on criteria of fitting the hypothesis in some manner.
Don't say "any" list because you won't get just any list. Just because there's accounts on a web site doesn't mean there's been no selection of which accounts are presented. Just for example: the pilots who did not come back did not make combat reports. That alone is data selection. |
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