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#1 2012-09-13 02:57:12

tina123
Member
Registered: 2012-04-29
Posts: 83

physical meaning of mean ?

What is the physical meaning of mean value ?
using this formula .

mean = (f * m) / n

where f is the frequency of each class and m is the mid point of each class
n is sum of frequecy

What is the physical meaning of mean using above formula ?

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#2 2012-09-15 17:20:09

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 18,140
Website

Re: physical meaning of mean ?

Mean can give you value around which the other values of the class are equally distributed.
You can know, what you are choosing is neither more nor less


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#3 2012-09-15 20:45:52

zetafunc.
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Re: physical meaning of mean ?

It is a formula which can give you an approximation of the mean (as you're only using mid-points of class intervals for which presumably you don't know how the exact distribution of). As for a physical meaning, it has applications in mechanics too -- you can apply a variation of that formula to find the centre of mass of a system.

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