Joint distribution function

The joint distribution function of a Kx1 random vector X is a function [eq1] such that:[eq2]where the components of X and x are denoted by $X_{k}$ and $x_{k}$ respectively, for $k=1,\ldots ,K$.

In other words, the value of the distribution function of X at the point x is equal to the probability that each component of X takes on a value smaller than or equal to the respective component of x.

The joint distribution function is also called joint cumulative distribution function.

More details about joint distribution functions can be found in the lecture entitled Random vectors.

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