Probability density function is a statistical expression defining the likelihood of a series of outcomes for a continuous variable, ... Mean-Variance Analysis: Definition, Example, and Calculation.

where the primes denote derivatives with respect to .If represents the mean of Y, then the variance expressed as a function of the mean is where V is the variance function. Probability distributions ...

The more degrees of freedom a quantum observable has, the more complicated it is to measure its probability distribution. Here, the authors deduce the mean and variance of an infinite-dimensional ...