Drexel dragonThe Math ForumDonate to the Math Forum

Search All of the Math Forum:

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

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

Topic: How to calculate quantiles
Replies: 3   Last Post: Jan 6, 2013 5:17 PM

Advanced Search

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

Posts: 60
Registered: 12/7/12
Re: How to calculate quantiles
Posted: Jan 3, 2013 7:25 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On 03/01/2013 4:54, William Elliot wrote:
> On Wed, 2 Jan 2013, Cristiano wrote:

>> I have 10^4 to 10^7 random real numbers (distribution unknown, but far away
>> from normal and uniform).
>> I need to calculate the very low and very high order quantiles (say 10^-7 and
>> 0.9999999) of those numbers.
>> Which method should I use?

> Generate a number between .9999999 and 10^-7 and divide by 10^-7.

Not sure I understand.
Suppose I generate .123 / 10^-7 = 1.23*10^6 and then?

> For above .9999999, generate a number below 10^-7 and substract
> that from 1.

>> I can generate more numbers, if needed.
>> Thank you
>> Cristiano


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

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2015. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.