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

Question

bsd 2011-8-5

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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

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Answer 1

Daniel Shub 2011-8-5

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在 MATLAB Online 中打开

((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.

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Answer 2

Praveen Pawar 2017-11-27

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Below expression will generate 1000 random numbers of any mean and standard deviation. And SD = sqrt(var)

y = standard_deviation.*randn(1000,1) + mean

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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.

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