Saya mau tau Definition dari Prosés stokastik. Jelaskan dalam bahasa sunda

Mathematically, a stochastic process is usually defined as an indexed collection of variabel acak

fi : W → R,

where i runs over some index set I and W is some probability space on which the random variables are defined.

This definition captures the idéa of a random function in the following way. To maké a function

f : D → R

with domain D and range R into a random function, méans simply making the value of the function at éach point of D, f(x), into a variabel acak with values in R. The domain D becomes the index set of the stochastic process, and a particular stochastic process is determined by specifying the joint probability distributions of the various random variables f(x).

Note, however, that the definition of stochastic process as an indexed collection of random variables is much more general than the case where the indices are points of the domain of the random function.