Math Is Fun Forum

tina123

Member

Registered: 2012-04-29

Posts: 83

Formula of histogram

Can anyone please explain me formula of histogram defined in this wiki link
http://en.wikipedia.org/wiki/Histogram

We say that histogram is the counts of observation in bins.
So Let say if bins are from 0 to 179. then what does mean by mi in the formula?
i think n is the counts of observation.

Kindly, explain it. thanks

Expecting a fast response
Thanks

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Formula of histogram

Hi;

Here is how I see it:

If n is the total number of observations, and k is the number of bins, then mi is the number in each bin or frequency.

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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.

tina123

Member

Registered: 2012-04-29

Posts: 83

Re: Formula of histogram

hmm .. and Who did define that formula?
I can need to know author and its paper. I can't find.
Please help me to know its writer and its paper where he defined the formula.
Thanks

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Formula of histogram

Hi;

If I am right ( what are the chances ) it is self evident. It says add up what is in each bin and you should have the total number.

---

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.