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11.06.2007 at 03:47PM PST, ID: 22943478
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6.2

Using System.Random to generate a uniform distribution of values

Asked by fmonroy in Probability & Statistics, C# Programming Language, .NET Framework 2.x

Tags: , ,

Hello experts, I'm using System.Random class, instantiating it without specifying the parameter so it uses a time-dependent default seed value.

Then I use Rnd.Next(1, 33); to get a value between 1 (inclusive) and 33 (exclusive).

This process is called on demand, so I thought it can have a good uniform distribution upon its results.

This is not uniform at all, you can see a graph at
http://img64.imageshack.us/img64/2304/distributionys5.png

I can see the problem is that I instantiate the class every time so consecutive results are not related to the past one.

Do you know a way to use seeds to generate a more uniform distribution?

In one run I can get thousands of values and store them for later use, but I'm looking for a more elegant one.

The problem is that I need to continue this uniform distribution over several program runs.

Thanks in advance.Start Free Trial
[+][-]11.06.2007 at 04:00PM PST, ID: 20229006

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Zones: Probability & Statistics, C# Programming Language, .NET Framework 2.x
Tags: uniform, distribution, generate
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Solution Provided By: Aurora27
Participating Experts: 3
Solution Grade: A
 
 
[+][-]11.06.2007 at 04:20PM PST, ID: 20229065

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