Sonny wrote:Just like all the polls that showed Kerry winning the last Presidential election?
Yes, which seemed to reflect the rather close outcome of the actual election. Similar to the polls, and actual national tallies, that showed Mr. Gore winning the popular vote in '00.
Sonny wrote:Interviewing less then 2000 people and extropolating 2/3 of a million deaths doesn't seem quite right any way you slice it. Your mileage may vary.
Well, as I thought, the number of people surveyed is very much in line with national polls here in the US, which they use to extrapolate to a country of about 300 million.
ABC News/Washinton Post - The poll is performed by telephone, calling roughly 1,200 “randomly selected adults nationwide”, from which self-identified registered voters are polled for the report’s information. ABC/WP says their Margin of Error is +/- 3 points
AP/Ipsos - The poll is a telephone poll of randomly selected numbers, with a sample of roughly 1,500 adults nationwide, produced between 1,200 and 1,300 registered voters...Ipsos’ reported Margin of Error is +/- 2.5 points for adults, +/- 2.7 points for registered voters.
CBS/New York Times - CBS/NYT generally calls about 1,000 adults in each survey, with around 78-80% as registered voters. Their cited Margin of Error is +/- 3 points
CNN/USA Today/Gallup: This poll uses random telephone interviews, with around 1,000 adults on average, around 76-80% registered voters responding. Announced Margin of Error is +/- 4 points.
Fox News/Opinion Dynamics : Opinion Dynamics Corporation conducts a national telephone poll 1,000 self-described ‘likely voters’ from random contacts. Their website says “Generally, Fox News poll results are not weighted. The national probability sample, if conducted properly, should accurately reflect national attitudes.
Gallup: The gold standard of opinion polling. Gallup polls are random telephone interviews, with around 1,000 adults on average, around 76-80% registered voters responding. Announced Margin of Error is +/- 4 points.
Harris: The Harris Poll is one of the oldest polls in the nation, after Gallup. The Harris Poll is a random telephone poll, as most of the polls are, interviewing roughly 1,000 adults nationwide in each poll, and producing around 80% registered voters from that pool. Harris cites a +/- 3 point Margin of Error.
Definitely seeing a pattern here on the number of subjects needed to provide fairly reliable results - the biggest margin of error is +/- 4%.
ABC News discusses their exit polling strategy -
Exit polls are based on much larger samples than tracking polls — at least 13,000 voters in each election since 1992 — with correspondingly low margins of sampling error, less than one percentage point.
So a sampling of 1,500 households from multiple areas of Iraq would seem to have some credibility. One may certainly question the motives of actions taken shortly before an election, such as the release of this study, or the charging of Azzam the American with treason. Of course they're all just "playing politics".