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**Al-Allo****Member**- Registered: 2012-08-23
- Posts: 324

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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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,339

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.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**Al-Allo****Member**- Registered: 2012-08-23
- Posts: 324

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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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,339

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.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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

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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