Generate a group of random number

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hongtao xu
hongtao xu 2023-11-27
回答： Torsten 2023-11-27
hello
I want to generate 20000 random numbers in the range of (0,1) and it conforms to a normal distribution with a standard deviation of 0.5 and a variance of 1.
please help me
  1 个评论
Dyuman Joshi
Dyuman Joshi 2023-11-27
"with a standard deviation of 0.5 and a variance of 1."
Yeah, that's not possible.
Is one of the properties supposed to be mean/average?

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采纳的回答

Image Analyst
Image Analyst 2023-11-27
Ran in:
Try this and see if it works for your purposes.
r = 0.5 * randn(20000, 1);
histogram(r);
grid on;
theMean = mean(r)
theMean = -0.0011
stDev = std(r)
stDev = 0.5051
x = r - 0.5; % Mean center the data
% Do a KS test for normal distribution.
h = kstest(x)
h = logical
1
% Do a lillie test for normality.
h = lillietest(x)
h = 0

更多回答（1 个）

Torsten
Torsten 2023-11-27
Maybe you mean a Truncated Normal Distribution:
https://uk.mathworks.com/help/stats/prob.normaldistribution.truncate.html

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