how to generate a uniform random variable with mean zero and variance ten?

6 次查看（过去 30 天）
bsd
bsd 2011-8-5
评论： Steven Lord 2017-11-27
Dear sir/madam,
I need to generate a uniform random variable with mean 0, and variance 10 for my project. How could I generate this in matlab? Looking forward to hearing from you soon.
Thanking you, BSD

请先登录，再回答此问题。

回答（2 个）

Daniel Shub
Daniel Shub 2011-8-5
((2*rand)-1)*sqrt(12/4)*sqrt(10)
The ((2*rand)-1) gives you a random variable with zero mean and a variance of 4/12. The rest scales it to a variance of 10.
Praveen Pawar
Praveen Pawar 2017-11-27
Below expression will generate 1000 random numbers of any mean and standard deviation. And SD = sqrt(var)
y = standard_deviation.*randn(1000,1) + mean
  1 个评论
Steven Lord
Steven Lord 2017-11-27
The line of code you've written is fine for solving a question about generating random numbers, but it will not solve the original question.
Part of that original question, with some emphasis added, was "I need to generate a uniform random variable". The randn function generates normally distributed pseudorandom numbers.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Random Number Generation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by