Unbiased Predictor

Categories: Metrics

Just watch our video on this one. It's really good. Thanks, Martin and Steven.

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Finance: When Can the Data Do You Wrong?20 Views

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Finance a la shmoop.. when can the data do you wrong? At least leave you and do

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beliefs you probably shouldn't have okay so you know the term caveat emptor

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or buyer beware right well the same applies to advice givers [Man approaches woman at psychiatric help stall]

00:16

or rather advice give-ees... so here's our little story there's this football

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stadium it pulled 65,536 people exactly it's filled the announcer comes on tells

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the very cooperative crowd to all stand and take out a quarter from their [Woman announcers addresses football crowd]

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pockets magically every attendee has one the announcer she then says alright flip

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the coin and despite a few jingles of missed coins...

00:43

...alright well everyone flips the

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announcer says okay, if you flipped a tails sit down.. there are now 32768 people standing and she says okay

00:55

flip again and then a few jingles yeah like if you can't catch your own coin [Persons coins fall to the floor]

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should you really even be at a game that's all about catching things anyway

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half the people sit she has him do it again 16,384 people are left and again

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8,192 people are left and again and again and again and again and again

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again again again.... until there were just two people left

01:13

standing she says flip again and they do and one gets another head the other gets [Person flips coin on heads]

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tail so only Bob is left here Bob the accountant from Reseda, he flipped a head

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on his quarter it was a legal quarter sixteen times in a row that fact will [Bobs gravestone appears]

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probably be on his tombstone and everyone will be impressed for all

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eternity so what is Bob do - well Bob writes books on how to flip heads

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he gives lectures he has his own website how to flip heads.com and Chapter four

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is on you know on angling the thumb, chapter six is on all the humidity

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levels, chapter eight is on what happens if you drop the coin you know Bob we're

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looking at you the reality is in real life people would actually listen to him [Man talking in football stadium]

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he would sell lots and lots of books when flipping a head be sure you've

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thoroughly washed your hands and I recommend propel you know that sticky

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stuff and don't forget to let your fingernails grow out a little bit Bob

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yes Bob this guy formerly this guy is now the expert on how [Bob with two women]

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flip a head point here when you take advice about patterns particularly from

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Wall Street commissioning kind of people be sure you know why and how it's being

02:21

given and what your in theory paying them for that loving advice where did

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the data come from and how did the giver become the expert and was this

02:30

real expertness or just odds and luck and everything at work do they

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really know what they're talking about or you know where they just Bob the

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lucky flipper [Bob dancing with two women in a club]

Find other enlightening terms in Shmoop Finance Genius Bar(f)