What is a random variable?

A Random Variable is a set of possible values from a random experiment. Example: Tossing a coin: we could get Heads or Tails. Rolling of a dice: we get 6 values

In the context of machine learning interview questions, the correct answer to “What is a random variable?” would be:

A random variable is a variable whose possible values are outcomes of a random phenomenon. In other words, it is a mathematical abstraction used to model and represent uncertain quantities in a probabilistic framework. Random variables can be classified into two main types: discrete random variables, which take on a countable set of distinct values, and continuous random variables, which can take any value within a specified range. In the context of machine learning, random variables are often used to model input features, target variables, or the uncertainty associated with certain parameters in probabilistic models.