You should be reading Feller v1 (p 86, 3rd ed) to see that the number of
zero crossings in this process is proportional to sqrt(n) not n.


url:    www.econ.uiuc.edu/~roger            Roger Koenker
email    [EMAIL PROTECTED]            Department of Economics
vox:     217-333-4558                University of Illinois
fax:       217-244-6678                Champaign, IL 61820


>
> On 10/16/07, azzza <[EMAIL PROTECTED]> wrote:
>>
>> Thats what is frustrating me....I've done a lot of reading, but  
>> there doesnt
>> seem to be much info on sign changes..............I  dont  
>> udnerstand why the
>> poportion of sign changes is much less than 50%, despite the  
>> proportion of
>> heads being equal to that of tails.
>>

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