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#1 2013-02-04 13:03:47

Al-Allo
Member
Registered: 2012-08-23
Posts: 293

Average

Quick question, how can someone find the numbers composing an average ?

Ex : I have  ---
                    x = 480
                           ___  = 60
                            8

I want to find the 8 numbers composing the average ? How is that done ? thanks

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#2 2013-02-04 13:06:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 85,303

Re: Average

Hi;

What you are asking is not possible. You are asking for 8 numbers that sum to 480. There are an infinite number of such groups of 8. You must put some constraints on those numbers to solve the problem.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#3 2013-02-04 13:13:50

Al-Allo
Member
Registered: 2012-08-23
Posts: 293

Re: Average

Here the whole exercise : I have 8 number , the average is 60 , and the average difference(not sure how to name this in english) is 4... I have no idea on how to do this ?

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#4 2013-02-04 13:19:38

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 85,303

Re: Average

Hi;

These are one possibilty:

46 50 54 58 62 66 70 74


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#5 2013-02-14 23:40:37

hammana
Member
Registered: 2012-03-02
Posts: 48

Re: Average

probably what you call "average difference" should be "standard deviation". What is the word used in the original text of the exsercise?

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