1. ## histograms and areas

Hi;
area of histogram is proportional to frequency which is the constant k.
how can I tell from a histogram when K is not equal to 1?

Thanks.

2. ## Re: histograms and areas

Originally Posted by anthonye
Hi;
area of histogram is proportional to frequency which is the constant k.
how can I tell from a histogram when K is not equal to 1?

Thanks.
I don't understand the question statement. Are you saying that given some frequency distribution S(f) the following holds?

$\displaystyle{\lim_{df \to 0}}\int_f^{f+df}S( \nu )d\nu = Kf$

This just says that $S(f)=Kf$

So the slope of S(f) immediately reveals the value of K.

If you've got discrete bins just do a linear regression on their values to get an estimate of the slope of $S(n \Delta f)$

3. ## Re: histograms and areas

I thought area was equal to frequency, now I read its proportional to frequency through area = k(frequency).
I understand that but by looking at a histogram and asked to find the frequency I would just fd(cw) this is fine
when the constant k=1. How do I know if k=1 from a histogram?