Suppose that a random variable, X, follows a Normal distribution. Specifically, X~N(10, 4).
What is the value for the standard deviation
To find the value for the standard deviation, we can look at the notation N(mean, standard deviation) or N(10, 4) in this case.
In a Normal distribution, the standard deviation, denoted as σ (sigma), represents the average amount of dispersion (or spread) of the values from the mean.
Here, the standard deviation is given as 4.