Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2013-08-11 23:54:55

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

Offline

#2 2013-08-12 00:14:42

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,799

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.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#3 2013-08-12 00:56:36

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

Offline

#4 2013-08-12 02:56:04

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,799

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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

Board footer

Powered by FluxBB