Math Is Fun Forum

Al-Allo

Member

Registered: 2012-08-23

Posts: 324

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

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

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.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Al-Allo

Member

Registered: 2012-08-23

Posts: 324

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 ?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Average

Hi;

These are one possibilty:

46 50 54 58 62 66 70 74

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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?