tschmidt
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join:2000-11-12
Milford, NH
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| Re: Statistics... said by Jerm  :I'm not sure why you think it would be flawed. I mean how much better can you get than a random sample? They calculated to margin of error as +/- 2.5% so that should give us some sense of accuracy. I would agree if it were in fact random but it is not.
They called folks about broadband. That means only people with Wireline phones were included in the survey.
Did they randomly select x number of people and call those numbers ignoring non respondents or did they create a pool of numbers and call until they reached the number they needed to be statistical accurate? Each approach creates different biases.
When did they call and did they call at the same local time in each time zone?
/Tom |
