Question

when a random variable is said to be discrete ? and give some example​

Answer 1

Answer:

Discrete Random Variables. ... A discrete variable is a variable which can only take a countable number of values. In this example, the number of heads can only take 4 values (0, 1, 2, 3) and so the variable is discrete. The variable is said to be random if the sum of the probabilities is one.

A discrete random variable is a variable that represents numbers found by counting. For example: number of marbles in a jar, number of students present or number of heads when tossing two coins. ... A probability distribution has all the possible values of the random variable and the associated probabilities.