There are three possibilities:

Case1: Left end

P--------------
Q--------------------------------------

Case2: Right end

P                        --------------
Q--------------------------------------


Case3: At mid position

P        -------------
A--------------------------------------


My question is how far my data falls on the all the three cases. Is it
biased towards case1 or case2 or case3. I have to consider the length of Q
in the data. Example: start2-start1 =2  and end2-end1 = 3 does not make much
difference if length of Q is 150000.

I do not hypothesize, i want to know how my data goes on.

Thanks and regards







On Thu, Jul 1, 2010 at 4:05 PM, Jonathan Christensen <dzhonatan@gmail.com>wrote:

> Hi,
>
> You need to define what you want more exactly--what are the possible
> conclusions (hypotheses) you want to reach? Based on what you've said, I can
> think of several different approaches you might want, but I'm not sure which
> one of them you're actually after. For example:
>
> Hypothesis A: The distance between the left endpoints of P and Q is less
> than (or equal to) the distance between the right endpoints.
> Hypothesis B: The distance between the right endpoints is smaller.
>
> This is a simple binomial test, as David Winsemius suggested. In your most
> recent email, though, it sounds like you want to take into account how much
> smaller one distance is than the other. This is more complicated.
>
> Another option occurred to me: maybe you don't care which end P is close
> to, you just want to know whether it's close to one of the ends, or
> somewhere in the middle.
>
> Without knowing what exactly you are trying to test, it's very hard for us
> to help you.
>
> Jonathan
>
>
> On Thu, Jul 1, 2010 at 7:45 AM, ravikumar sukumar <
> ravikumarsukumar@gmail.com> wrote:
>
>> Sorry for posting to the R list.
>>
>> P                  Q
>> 12, 28       10, 42
>> 2, 5           1, 55
>> 32, 50       22, 63
>> ..... there are 10000 points of P and Q.
>> The number of points of P and Q are equal (i,e 10000).
>>
>> The interval P always overlaps with Q. i,e start1<start2 and end1<end2.
>>
>> mere calculating whether points have this condition will not be
>> significant start1<start2 and end1<end2 and the length of P that is
>> length(end1-start1) and Q ie length(end2-start1) differs.
>>
>> Example
>> Case A:
>>
>>
>> Case B:
>> start2 - start1 =100
>> end2-end1 = 2
>>
>> In the above two cases, P is falling on the right end of Q in case B. But
>> it
>> depends on the length(end2-start2). If the length(end2-start2) =15000 in
>> case of B, then it is almost on the middle point.
>>
>> Is there any test or function in R to bring a statistically
>> significant conclusion that midpoint of P or P itself is falling on the
>> left
>> end or right end of Q.
>>
>> sorry once again for posting in this list.
>>
>> Regards
>>
>>        [[alternative HTML version deleted]]
>>
>> ______________________________________________
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>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>

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