detect peaks and valleys

tina123 · 2012-09-22 02:39:06

tina123 wrote:

bobbym wrote:
Do you see what a peak is?
as i understand peak is maximum value .. and 20 , 21 are the maximum . .
so those are peaks

Oh yar we are still not able to decide .

bobbym · 2012-09-22 02:42:10

Hi;

I drew arrows to the peaks in post #20.

To decide you need the data.

tina123 · 2012-09-22 03:06:17

hy no .. . How did say that its peak . We can see it graphically ,
but i still do't understand how can say its out peak .

bobbym · 2012-09-22 03:10:52

Do you have the data values? That is how you determine it.

tina123 · 2012-09-22 03:13:10

yes i already showed u data values in my #post 1 .

bobbym · 2012-09-22 03:15:47

Count up each type of data value the way I did in post #4. That is how you get those peaks and valleys. You do not need the histogram.

tina123 · 2012-09-22 03:17:15

bobbym wrote:

Count up each type of data value the way I did in post #4. That is how you get those peaks and valleys. You do not need the histogram.

Oh u are making me confuse . leave it . now .
I need to work with histogram .

bobbym · 2012-09-22 03:23:11

The histogram is for the eye to get an idea what the data looks like. The data itself is the best thing.

Look at post #4, the data.

There
4 ones
1 two
1 three
3 fours

you do the rest. You will see there are more ones than anything else. That is a peak.

tina123 · 2012-09-30 04:13:30

hy Bobby, from post #1, how can we get probability ?

bobbym · 2012-09-30 04:30:54

Hi;

Yes, those are peaks.

tina123 · 2012-09-30 04:35:09

ok but i am asking about probability .
How can we compute probability of each bin ?
Also how can we compute Bayesian formula in histogram post #1 .
As Bayesian formula can show that posterior probability is proportional to density value .

bobbym · 2012-09-30 04:39:42

Hi;

Just take how many is in that bin and divide it by the total number.

tina123 · 2012-09-30 04:42:06

and how about Bayesian formula in histogram post@1 .
As Bayesian formula can show that posterior probability is proportional to density value .
That's y i am interested in Bayesian formula .

bobbym · 2012-09-30 05:17:40

Hi tina123;

I do not understand either term. You will have to explain to me what they mean.

tina123 · 2012-09-30 05:39:03

hy ,, its a just Bayes theorem on histogram data .

bobbym · 2012-09-30 05:54:07

Hi;

I am sorry but I can not apply Bayes theorem here. What question is being asked? I do not know. Hard enough to solve a problem but having to guess at what it is, is too tough.

Please go here so you can ask a specific problem:

http://en.wikipedia.org/wiki/Bayes%27_theorem

Math Is Fun Forum

#26 2012-09-22 02:39:06

Re: detect peaks and valleys

#27 2012-09-22 02:42:10

Re: detect peaks and valleys

#28 2012-09-22 03:06:17

Re: detect peaks and valleys

#29 2012-09-22 03:10:52

Re: detect peaks and valleys

#30 2012-09-22 03:13:10

Re: detect peaks and valleys

#31 2012-09-22 03:15:47

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#32 2012-09-22 03:17:15

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#33 2012-09-22 03:23:11

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#34 2012-09-30 04:13:30

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#35 2012-09-30 04:30:54

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#36 2012-09-30 04:35:09

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#37 2012-09-30 04:39:42

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#38 2012-09-30 04:42:06

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#39 2012-09-30 05:17:40

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#40 2012-09-30 05:39:03

Re: detect peaks and valleys

#41 2012-09-30 05:54:07

Re: detect peaks and valleys

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