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Revision as of 09:01, 18 December 2019 editXx78900 (talk | contribs)Extended confirmed users, Pending changes reviewers3,503 edits →Polyhedral Dice Dating: new section← Previous edit Revision as of 09:01, 18 December 2019 edit undoXx78900 (talk | contribs)Extended confirmed users, Pending changes reviewers3,503 editsm →Polyhedral Dice DatingNext edit →
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== Polyhedral Dice Dating == == Polyhedral Dice Dating ==


The section on polyhedral dice opens with saying "Around the end of the 1960's"; implying that this is the origin of polyhedral dice. However, this is clearly contrasted by the image of the d20 from Ptolemaic Egypt earlier in the article. I don't know much on the topic so will refrain from editing, but there seems to be something astray. The section on polyhedral dice opens with saying "Around the end of the 1960's"; implying that this is the origin of polyhedral dice. However, this is clearly contrasted by the image of the d20 from Ptolemaic Egypt earlier in the article. I don't know much on the topic so will refrain from editing, but there seems to be something astray. ] (]) 09:01, 18 December 2019 (UTC)

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Average dice throw

Section 5.1.2 of the article states:

>>> A variation on the standard die is known as the "average" die. These are six-sided dice with sides numbered 2, 3, 3, 4, 4, 5, which results in the same average result as a standard die (3.5 for a single die, 7 for a pair of dice), but have a narrower range of possible values (2 through 5 for one, 4 through 10 for a pair). They are used in some table-top wargames, where a narrower range of numbers is required. <<<

To roll a dice is a random event/process and in statistics, these events are not called average result, expected value would be the suitable/proper team. In short, to call it average result would be wrong. — Preceding unsigned comment added by Da Vinci Nanjing (talk • contribs) 14:26, 17 September 2017 (UTC)

That's not what the use means. It's not talking about likeliness of outcomes, which, but the actual average (arithmetic mean) of all the possible sums. The use of the technical term needs better explanation. oknazevad (talk) 14:59, 17 September 2017 (UTC)

Hello Oknazevad,

I don't agree.

The paragraph it not referring to the likelihood of outcomes. The likelihood for each number for throwing a dice is 1/n. For a dice n=6. So the probability is 1/6.

To roll a dice is in probability theory an event described by a uniform distribution. To find an average of a UD you have to sum up all possible outcomes and divide this by the count of outcomes:

n=6

1+2+3+4+5+6=21

21/6= 3.5

This average what you get is called expected value.

To get the expected value of throwing a dice in real you would have to roll the dice an infinite amount of throws than calculate the average of all throws.

It doesn't matter if a 6 sided dice has 1-6 on its sides or 2,3,3,4,4,5. The expected value for both variants of dices is 3.5.

Further, you state, the use of this technical term needs better explanation:

This means you agree it is the proper term, but it's too difficult to understand? If the term expected value needs a better explanation what about to change the term into a hyperlink referring to an online encyclopedia (e.g. Misplaced Pages) explaining it? Da Vinci Nanjing (talk) 14:06, 18 September 2017 (UTC)

to Oknazevad:

I got to know this stuff in Quantitative Methods - Statistics at Koblenz University of Applied Science (Germany) the Faculty of Business and Management. Thanks to Prof. Dr. G.S.

Da Vinci Nanjing (talk) 18:36, 19 September 2017 (UTC)

Hello Oknazevad,

you did not make any comment to my explanation: You did not write, I am wrong or I am right or somewhere in between. Your edit summary says:

No, the sum of the possible outcome values divided by the number of possible outcomes is an arithmetic mean, not an expected value. That's the point of the passage.

That's wrong, why? Look at my next-to-last post in the Talk section related to the article. Referring to your explanation, it all comes down to a random event. Additionally, you reverted my edit instead of doing a new one will deteriorate some of my edit statistics. It seems like, you try to tease me on purpose.

If you got the courage to challenge me, defuse my arguments.

Let's assume you throw a 6 sided dice: You could calculate the expected value before you throw the dice as every outcome got the same probability. You could calculate the average e.g. after you throw the dice 9 times:

2 4 3 2 3 3 6 2 3

Generated with the randbetween function from MS Excel 2013 The sum is 28 / 9 = 3.111111... The 3.111111... is the average. The 3.5 is the expected value, even if your average differentiates, you knew this figure even before you threw the dice. The paragraph doesn't state how often you would throw and the outcome so it is referring to the expected value.

Hereby I provide a source to calculate the expected value from a dice throw:
http://www.mathwords.com/e/expected_value.htm

Da Vinci Nanjing (talk) 19:44, 20 September 2017 (UTC)

To be honest, I am having difficulty following your argument because of your grammar. Regardless, as I said in my edit summary, the sentence is about the name of the variant, which derives not from looking at the outcome of rolls, regardless of how many, but merely the average of the values of the faces, merely that (1+2+3+4+5+6)/6 is the same as (2+3+3+4+4+5)/6. There's no statistical probability involved, so any mention of expected outcomes is irrelevant. oknazevad (talk) 22:34, 20 September 2017 (UTC)

World Dice Day

I wonder if it would be interesting to add something about the World Dice Day, held on 4th december each year?

DrNoD (talk) 06:17, 21 April 2018 (UTC)

Nah, too trivial. If every Misplaced Pages article mentioned it's honorary day that is not widely known it would make the encyclopedia look silly. oknazevad (talk) 14:55, 21 April 2018 (UTC)

Augustus and Tacitus dates

Comment to https://en.wikipedia.org/Special:Contributions/2601:249:8A00:2500:4AF1:7FFF:FEE5:C031

I added the dates because they show that Augustus died 42 years before Tacitus was born, and therefore COULDN’T have written a letter to him. I presume it’s a mangling of an actual fact, which some other editor may be able to supply. I modified the article rather than simply commenting here, as I have observed that Talk page comments are far less likely now to result in action to correct an article than was the case 15 years ago. Koro Neil (talk) 06:01, 14 October 2019 (UTC)

So... you're just going to leave in the article what you consider to be an error, but actually making it worse by making it look silly? In the hopes that maybe someone will eventually come along and fix it? Do you have access to the cited source to see if the error is in the source, or in the person adding the source to the article? 2601:249:8A00:2500:4AF1:7FFF:FEE5:C031 (talk) 11:51, 14 October 2019 (UTC)
Easy now... I agree with user:Koro Neil that something's got to be fixed; I agree with the IP6-user above that leaving nonsense in the article is not the best way to go about it. There's nothing wrong with pointing out an inconsistency without having the sources to put it right, but the way to go about it is
  1. Remove the nonsense with a sensible edit summary;
  2. and/or write a talk page post about the problem (and I do not agree it doesn't work, not on a fairly well watched article like this one - but of course it may take a little time)
  3. or, of course, doing the work, finding the sources needed, and fixing it.
For now, I've removed the statement entirely - viz.
Dicing was even a popular pastime of emperors. Letters by Augustus to Tacitus and his daughter recount his hobby of dicing.
or, in Koro Neils version, highlighting the inconsistency,
Dicing was even a popular pastime of emperors. Letters by Augustus (died 14 AD) to Tacitus (born ca 56 AD) and his daughter recount his hobby of dicing.
--Nø (talk) 21:37, 14 October 2019 (UTC)

I think that's a good solution until we have a solid source that discusses what Roman emperors actually did with dice. :) 8.37.179.254 (talk) 23:23, 14 October 2019 (UTC)

Polyhedral Dice Dating

The section on polyhedral dice opens with saying "Around the end of the 1960's"; implying that this is the origin of polyhedral dice. However, this is clearly contrasted by the image of the d20 from Ptolemaic Egypt earlier in the article. I don't know much on the topic so will refrain from editing, but there seems to be something astray. Xx78900 (talk) 09:01, 18 December 2019 (UTC)

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