The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.stat.math

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

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

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Richard Ulrich

Posts: 2,961
Registered: 12/13/04
Re: Is there a name for this distribution?
Posted: Nov 17, 2013 3:59 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Sun, 17 Nov 2013 11:10:30 -0800 (PST), Steve
<> wrote:

>> 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

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.