You can't nitpick about "only 1000 ports" being used to draw a conclusion- pretty much every survey samples around 1000 people because that gets good accuracy and still allows for easy-to-use distributions to describe the data. A bigger problem (which you mention first) is that we're only taking data from one T-Mobile distributor.
The biggest problem is that you only tell me that the percentage of people porting from T-Mobile to AT&T is lower than it was last time. How did it change in absolute terms? Had there been a trend of people porting less to AT&T now than before? I also would imagine that people porting to T-Mobile care much less about data and, therefore, probably have lower monthly payments than those who ported away from T-Mobile. None of this is answered by the one random wholesaler.
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You can't nitpick about "only 1000 ports" being used to draw a conclusion- pretty much every survey samples around 1000 people because that gets good accuracy and still allows for easy-to-use distributions to describe the data. A bigger problem (which you mention first) is that we're only taking data from one T-Mobile distributor.
The biggest problem is that you only tell me that the percentage of people porting from T-Mobile to AT&T is lower than it was last time. How did it change in absolute terms? Had there been a trend of people porting less to AT&T now than before? I also would imagine that people porting to T-Mobile care much less about data and, therefore, probably have lower monthly payments than those who ported away from T-Mobile. None of this is answered by the one random wholesaler.