Linked from
The 85 pages that link to Random variable, each with the reason it gives.
Markov chainRelated: Each time-indexed state of a Markov chain is modeled as a random variable.
Sigma-algebraRelated: Measurability is defined by how inverse images interact with sigma-algebras.
Sample spaceRelated: It maps outcomes in the sample space to quantities of interest.
StatisticsRelated: It represents uncertain measurements and outcomes in statistical models.
Random number generationRelated: Generated numbers are modeled as realizations of random variables.
Outcome (probability)Related: It converts outcomes into values that can be analyzed numerically.