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Topic: Is there a name for this distribution?
Replies: 6   Last Post: May 27, 2014 11:17 AM

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Richard Ulrich

Posts: 2,866
Registered: 12/13/04
Re: Is there a name for this distribution?
Posted: Nov 17, 2013 3:59 PM
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On Sun, 17 Nov 2013 11:10:30 -0800 (PST), Steve
<petertwocakes@googlemail.com> wrote:

ru>
>>
>> If you wanted to confine a normal to [0,1] while
>> preserving the first 3 SD of range, you would take
>> a normal deviate and divide by 9, then add 0.5.
>>
>> Trim or truncate (whichever you arbitrarily decide)
>> whatever draws exceed the range.
>>
>> If you want a skewed distribution between 0 and1,
>> you might look at the beta.
>>
>> --
>>
>> Rich Ulrich

>
>Thanks Rich. I don't understand 100% at the moment but there's enough there now that at least I know what to search for, study, and try. Specifically, I don't know what 'normal deviate' means. If it means the rate of change of the normal curve, I don't know how to calculate that.



My usage there was sloppy. But I'm not sure how much
spelling out you need, because I figured what I said would
be intelligible if you had any relevant background at all.

My sloppy language was mainly appropriate for looking
at a Monte-carlo simulation, and generating values that
fall in a given distribution. A z-score, whichh is normal,
mean 0, variance 1, is called a "normal deviate."

So, Standard Normal is N (0,1) where 0 is mean, 1 is Var.

A normal that is "mostly" between [0,1], as described,
is N(0.5, 0.1111...)

--
Rich Ulrich



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