Consider a stream of data that we receive, call them where is the element in the stream. Note that we receive every at the time step and that is then no more in our access once we move on to the next time step. Furthermore, we don’t even know the
There are many methods of introducing structure to random variables in Probability Theory, and traditionally we call this structure a property, and one such property is its distribution. Phrases like “coming from this distribution” or “they distribute as such” or “these variables make this distribution” all refer to this property.