Hi - please what is the difference between normrnd and randn ?

How to use normrnd to generate random numbers from normal distribution with specific mean and variance ?

[jonas]

have you tried the doc ?

Answer 1

[Jan]

1. what is the difference between normrnd and randn?

doc normrnd

 r = normrnd(mu,sigma) generates a random number from the normal distribution with mean
 parameter mu and standard deviation parameter sigma.

doc randn

 X = randn returns a random scalar drawn from the standard normal distribution.

"Standard normal distribution" is a mean of 0.0 and a standard deviation of 1.0 . This means:

normrnd(mu, sigma) = randn * sigma + mu

2. How to use normrnd to generate random numbers from normal distribution with specific mean and variance ?

Simply by calling: normrnd(mu, sigma)

Remember that normrnd uses the standard deviation, which is the square root of the variance.

Do you know the doc and help commands? You find the documentation of the current Matlab version online also: https://www.mathworks.com/help/index.html