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Re: All those No.10 lockdown parties
Right, so as I'm reading all the highly intelligent replies (which don't actually say anything apart from 'we're right you're wrong'), I can see that 2 of 30 in the same room sharing a birthday is a definite statistical probability, whereas 2 from 40 sharing the same christian and (uncommon) surname is simply too absurd to be considered a statistic.
Truth be told, both are simply coincidences, bugger all to do with statistics. P.S. question regarding members birthdays still not answered ;) . . . and probably won't be |
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I don't understand why you're going on about names. It's not the same principle. |
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Sorry if you’re finding your demands for the rest of us to do your homework for you are going unfulfilled but that’s your lookout. Statistics is applied maths, and in the case of opinion polling it produces useful results, provided the techniques are correctly followed and the caveats properly understood and allowed for. It isn’t guesswork, no matter how many times you’ve heard your local pub bore declaring it to be the case. |
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https://www.cableforum.uk/board/atta...5&d=1650560876 |
Re: All those No.10 lockdown parties
82% of statistics are made up - Vic Reeves. :D
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Re: All those No.10 lockdown parties
top answer Hugh, well done, it does appear that many people REALLY don't understand :p:
Anyway, that's enough from me, you lot carry on defending your faith in statistics ;) |
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Anyhoo, back on topic… Partygate: Boris Johnson will face Commons investigation https://www.thetimes.co.uk/article/8...0a804c17b6d643 Quote:
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The survey companies have a very large pool of people who represent the demographic shape of the country and then use a proportion of that pool, I believe picked at random, to answer whatever the survey is about. Any shortfall in the demographic profile arising from the random selection is adjusted by the "normalisation" process when the surveys are in. Whereas the birthday probability calculation is entirely mathematical, survey/polls have a significant subjective element applied to them. Hugh's comparison is of very limited value, though the example he gave is interesting. |
Re: All those No.10 lockdown parties
https://yougov.co.uk/about/panel-met...y/research-qs/
https://yougov.co.uk/about/panel-methodology/ ---------- Post added at 19:11 ---------- Previous post was at 18:43 ---------- Why I became an MP… |
Re: All those No.10 lockdown parties
Thats actually quite funny. :D
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Although this part of the conversation was triggered by my indifference specifically to YouGov. They don’t randomly ask 2000 or 1000 people, they ask 2000 or 1000 people “specifically chosen” from a database of “recruited” registered YouGov respondents. Quote:
I’m not saying it is……but you could quite easily skew a result by selecting your respondents. You may read the attached and think that’s all fine, and if properly managed and overseen it may be. https://yougov.co.uk/about/panel-methodology/ But……importantly…..it’s not random. It’s like getting a lucky dip in the lottery, those numbers are computer generated and anything computer generated is not random. |
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https://en.wikipedia.org/wiki/Premium_Bond#ERNIE https://en.wikipedia.org/wiki/Hardwa...mber_generator Even the old Pace STBs had a random number generator based on sampling noise off the cable. |
Re: All those No.10 lockdown parties
Also whilst it's true most implementations of a standard random number algorithms in programming aren't truly random they pretty much are for the purposes we're talking about here. For picking from datasets, i.e a population, pseudo-random is fine. It's not going to be biased to a pre-determined outcome whereas if you were doing a coin-toss betting game there would be an advantage to knowing what seeded the random number generator (and what the generator was).
But polling clearly works. YouGov called the last election as Tories: 43%. They got 44%. Labour: 33%. They got 34%. It's not precise. There are limitations. But it's not bad and it's the best we have outside of elections. It's certainly better than our own biases, political commentators or anecdotal evidence from our social circles. If Remainers listened to polling rather than Twitter the Brexit vote wouldn't be such a shock. If Labour had listened to the polls rather than assume everyone loves Corbyn they would have gotten rid of him before December 2019. Failed election campaigns almost always a mantra into why the polls are wrong. |
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