The mean and variance are equal in the Poisson distribution. The mean and std deviation would be equal only for the case of mean = 1. See related link.
Chat with our AI personalities
The standard normal distribution is a subset of a normal distribution. It has the properties of mean equal to zero and a standard deviation equal to one. There is only one standard normal distribution and no others so it could be considered the "perfect" one.
The exponential distribution and the Poisson distribution.
Yes
Only the mean, because a normal distribution has a standard deviation equal to the square root of the mean.
no the standard deviation is not equal to mean of absolute distance from the mean