Author Topic: Spinning penny  (Read 1800 times)

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Offline TXCraig1

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Re: Spinning penny
« Reply #20 on: November 07, 2012, 11:04:01 PM »
There is certainly a pattern to Pi, here it is: 3.14159...  Works every single time you calculate it, exactly the same, no randomness what so ever.

It is unique, not random, there is a difference.

True random is best illustrated by "bookie numbers".  When a bookie wants to run an almost honest numbers game, he sets the numbers to something like box scores, placing horse numbers or something like that.  They are still biased numbers, but in general they appear to be random.

OK, it has a pattern - 1 pattern - in that it is a constant. Notwithstanding, there is no repeating pattern that makes up pi. How did my question ever get to this discussion anyway?
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Offline Jet_deck

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Re: Spinning penny
« Reply #21 on: November 07, 2012, 11:04:30 PM »
Dam science project, I bet.  Or, was that last year?
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Offline TXCraig1

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Re: Spinning penny
« Reply #22 on: November 07, 2012, 11:04:55 PM »
.54 heads up.

So is a slight heads up bias the consensus?
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Offline TXCraig1

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Re: Spinning penny
« Reply #23 on: November 07, 2012, 11:05:10 PM »
Dam science project, I bet.  Or, was that last year?

This year.
I love pigs. They convert vegetables into bacon.

Online Chicago Bob

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Re: Spinning penny
« Reply #24 on: November 07, 2012, 11:11:57 PM »
OK, it has a pattern - 1 pattern - in that it is a constant. Notwithstanding, there is no repeating pattern that makes up pi. How did my question ever get to this discussion anyway?
Got me man....
Now ya got me digg'in in my pockets''''
OK. 50/50  Like I said.
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Offline Tscarborough

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Re: Spinning penny
« Reply #25 on: November 07, 2012, 11:13:18 PM »
If you use that coin.  For random, flip a couple of wheats, a couple of Abes, and couple of new pennies, randomly out of a bag.  Still not truly random, but close enough for government (or school) work to the college level.  For bonus points do 10,000 of each and compare and contrast.

Online Chicago Bob

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Re: Spinning penny
« Reply #26 on: November 07, 2012, 11:15:10 PM »
If you use that coin.  For random, flip a couple of wheats, a couple of Abes, and couple of new pennies, randomly out of a bag.  Still not truly random, but close enough for government (or school) work to the college level.  For bonus points do 10,000 of each and compare and contrast.
Thought we were spinn'in not flipp'in man.... :-D
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Offline Jet_deck

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Re: Spinning penny
« Reply #27 on: November 07, 2012, 11:20:17 PM »
Thought we were spinn'in not flipp'in man.... :-D

That is the jist.  Spinnin not flippin.
Her mind is Tiffany-twisted, she got the Mercedes bends

Offline Jet_deck

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Re: Spinning penny
« Reply #28 on: November 07, 2012, 11:21:07 PM »
So is a slight heads up bias the consensus?

No. I am at 55% tails up.
Her mind is Tiffany-twisted, she got the Mercedes bends

Offline Jet_deck

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Re: Spinning penny
« Reply #29 on: November 07, 2012, 11:22:20 PM »
Please just give us the "answer".  I won't be able to sleep unless I know.  Your friggin killing my brain. STOP.
Her mind is Tiffany-twisted, she got the Mercedes bends


Offline Tscarborough

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Re: Spinning penny
« Reply #30 on: November 07, 2012, 11:22:42 PM »
However you want to do it, the odds are the same:  1 spin, 50/50, statistical number of spins, biased to relative side weight.

Online Chicago Bob

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Re: Spinning penny
« Reply #31 on: November 07, 2012, 11:24:09 PM »
That is the jist.  Spinnin not flippin.
.54...55%....whatever.....I believe that maybe the U.S. mint prolly makes these coins BALANCED,No?
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Offline Tscarborough

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Re: Spinning penny
« Reply #32 on: November 07, 2012, 11:25:10 PM »
But it ain't random.

Offline Jet_deck

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Re: Spinning penny
« Reply #33 on: November 07, 2012, 11:26:47 PM »
.54...55%....whatever.....I believe that maybe the U.S. mint prolly makes these coins BALANCED,No?

They are stamped on both sides at the same time.  The us mint doesn't give a ratsarse whether they are balanced or not.  Unless they knew there was some wacko making people guess which side was heavier.
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Offline TXCraig1

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Re: Spinning penny
« Reply #34 on: November 07, 2012, 11:26:48 PM »
After the first 400 of a planned 1000 spins, the penny has landed tails up 263 times or 58.4%.

Two different people spun pennies - each on two different surfaces (polished wood and quartz laminate). One had tails up 58.6% the other 58.3%. The most common pennies by far are the ones with the Lincoln Memorial on the back. They landed tails up 59.2%. The new pennies with the shields on the back were slightly lower at 53.2%, and the 2009 pennies with the 4 different Lincoln backs were slightly higher at 63.2% tails up. The probability of realizing this outcome if the heads|tails probability is actually 50|50 is 0.014% - meaning statistically you'd get this result once every 7281 times you spun 400 coins. It seem pretty clear that spinning a penny is significantly biased.

The explanation appears to be Lincoln's heavy head tends to pull the coin over leaving the tail up. Of course, this only applies to a spinning penny. It would not apply to flipping a penny.
I love pigs. They convert vegetables into bacon.

Offline Jet_deck

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Re: Spinning penny
« Reply #35 on: November 07, 2012, 11:28:15 PM »
Good night.  I was headed for the ER.
Her mind is Tiffany-twisted, she got the Mercedes bends

Offline TXCraig1

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Re: Spinning penny
« Reply #36 on: November 07, 2012, 11:28:48 PM »
However you want to do it, the odds are the same:  1 spin, 50/50, statistical number of spins, biased to relative side weight.

Not accurate. 1 spin is closer to 58:42 tails based on our data.
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Offline Tscarborough

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Re: Spinning penny
« Reply #37 on: November 07, 2012, 11:30:07 PM »
Keep spinning.

Offline TXCraig1

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Re: Spinning penny
« Reply #38 on: November 07, 2012, 11:30:32 PM »
No. I am at 55% tails up.

So, you were close to what we found. Please send me the link where you read the answer.
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Online Chicago Bob

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Re: Spinning penny
« Reply #39 on: November 07, 2012, 11:31:14 PM »
They are stamped on both sides at the same time.  The us mint doesn't give a ratsarse whether they are balanced or not.  Unless they knew there was some wacko making people guess which side was heavier.

Now that's pretty funny right there.... >:D
"Care Free Highway...let me slip away on you"


 

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